As filed with the Securities and Exchange Commission on April 10, 1995.
                                               Registration No. 33-89120
===================================================================



                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549
                    ----------------------------------------

                                AMENDMENT NO. 2

                                       TO

                                    FORM S-3
                             REGISTRATION STATEMENT

                                     UNDER

                           THE SECURITIES ACT OF 1933


                           SUMMAGRAPHICS CORPORATION
             (Exact name of registrant as specified in its charter)


 
                                                                       
MICHAEL S. BENNETT                     COPIES TO:  ROBERT B. SIMS            MICHAEL W. TANKERSLEY
PRESIDENT & CHIEF EXECUTIVE OFFICER                SENIOR VICE PRESIDENT     HUGHES & LUCE, L.L.P.
SUMMAGRAPHICS CORPORATION                          AND GENERAL COUNSEL       SUITE 2800
8500 CAMERON ROAD                                  SUMMAGRAPHICS CORP.       1717 MAIN STREET
AUSTIN, TEXAS  78754                               8500 CAMERON ROAD         DALLAS, TEXAS 75201
(512) 835-0900                                     AUSTIN, TEXAS 78754

- -------------------------------------
(Name, address, including zip code,
and telephone number, including area
code, of agent for service)

                    ----------------------------------------

   APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:  From time
to time after the Registration Statement becomes effective.

                    ----------------------------------------

   If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
line. ____

   If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following line.   X
                                              -----

   THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933 OR UNTIL THIS REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.

 
                             PRELIMINARY PROSPECTUS

                  SUBJECT TO COMPLETION, DATED APRIL 10, 1995

                           SUMMAGRAPHICS CORPORATION
                         133,323 SHARES OF COMMON STOCK

     This Prospectus relates to an offering of up to 133,323 shares of common
stock, par value $.01 per share (the "Common Stock"), of Summagraphics
Corporation, a Delaware corporation (the "Company" or "Summagraphics"), that
were issued pursuant to the Asset Purchase Agreement, executed on November 10,
1994, by and among the Company, CAD Warehouse, Inc., a Nevada corporation and
wholly owned subsidiary of the Company ("CAD Nevada"), CAD Warehouse, Inc., a
Delaware corporation ("CAD Delaware") and the shareholders of CAD Delaware (the
"Selling Shareholders").

     The Common Stock being registered is being offered for the accounts of the
Selling Shareholders.  See "Selling Shareholders."  The Selling Shareholders
have agreed with the Company that, without the Company's prior consent, they
will not sell on any trading day an aggregate number of shares of Common Stock
in excess of the greater of 3,000 shares or 20% of the average daily trading
volume of the Common Stock for the preceding ten trading days.  See "Plan of
Distribution."  The Company will not receive any proceeds from the sale of the
shares of Common Stock offered hereby.  The shares may be offered in
transactions on the Nasdaq National Market, in negotiated transactions, or
through a combination of such methods of distribution, at prices relating to the
prevailing market prices or at negotiated prices.  See "Plan of Distribution."

     The Common Stock is quoted on the Nasdaq National Market under the symbol
"SUGR."  The shares of Common Stock being offered by this Prospectus have been
approved for listing on the Nasdaq National Market.  On April 6, 1995, the last
sale price of the Common Stock, as reported by the Nasdaq National Market, was
$5.00 per share.

     SEE "RISK FACTORS" FOR CERTAIN INFORMATION THAT SHOULD BE CONSIDERED BY
PROSPECTIVE PURCHASERS OF THE COMMON STOCK OFFERED HEREBY.
                    ========================================

         THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
           SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
          COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR
            ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY
             OR ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO
                      THE CONTRARY IS A CRIMINAL OFFENSE.

     NO DEALER, SALESMAN OR ANY OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS IN CONNECTION WITH THIS OFFERING
OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS AND, IF GIVEN OR MADE, SUCH OTHER
INFORMATION AND REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN
AUTHORIZED BY THE COMPANY OR THE SELLING SHAREHOLDERS.  NEITHER THE DELIVERY OF
THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES,
CREATE ANY IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE
COMPANY SINCE THE DATE HEREOF OR THAT THE INFORMATION CONTAINED HEREIN IS
CORRECT AS OF ANY TIME SUBSEQUENT TO ITS DATE.  THIS PROSPECTUS DOES NOT
CONSTITUTE AN OFFER TO SELL, OR A SOLICITATION OF AN OFFER TO BUY, ANY
SECURITIES OTHER THAN THE REGISTERED SECURITIES TO WHICH IT RELATES.  THIS
PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL, OR A SOLICITATION OF AN OFFER
TO BUY, SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION
IS UNLAWFUL.
                  ===========================================

                 The date of this Prospectus is April 10, 1995.

 
                             AVAILABLE INFORMATION

     The Company is subject to the informational reporting requirements of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and, in
accordance therewith, files reports and other information with the Securities
and Exchange Commission (the "Commission").  Reports, proxy statements,
information statements, and other information filed by the Company with the
Commission pursuant to the requirements of the Exchange Act may be inspected and
copied at Judiciary Plaza, 450 Fifth Street, N.W., Room 1024, Washington, D.C.
20549-1004 and at the following Regional Offices of the Commission: New York
Regional Office, Seven World Trade Center, Suite 1300, New York, New York 10048;
and Chicago Regional Office, Northwestern Atrium Center, 500 West Madison
Street, Suite 1400, Chicago, Illinois  60661.  Copies of such material may be
obtained from the Public Reference Room of the Commission at 450 Fifth Street,
N.W., Washington, D.C. 20549, at prescribed rates.  The Company is a publicly
held corporation and its Common Stock is traded on the Nasdaq National Market
under the symbol "SUGR."  Reports, proxy statements, information statements, and
other information can also be inspected at the offices of the Nasdaq Stock
Market, Inc.

     The Company intends to furnish its shareholders with annual reports
containing audited financial statements and such other periodic reports as it
may determine to furnish or as may be required by law.

     The Company has filed with the Commission a Registration Statement on Form
S-3 (referred to herein, together with all exhibits, as the "Registration
Statement") under the Securities Act of 1933, as amended (the "Securities Act"),
with respect to the shares of Common Stock offered hereby.  This Prospectus does
not contain all information set forth in the Registration Statement.  Certain
parts of the Registration Statement have been omitted in accordance with the
rules and regulations of the Commission.  For further information, reference is
made to the Registration Statement which can be inspected at the public
reference rooms at the offices of the Commission.

                      DOCUMENTS INCORPORATED BY REFERENCE

     The Company will provide without charge to each person to whom a copy of
this Prospectus is delivered, including any beneficial owner, upon the written
or oral request of such person, a copy of any or all of the documents
incorporated by reference herein (other than exhibits to such documents, unless
such exhibits are specifically incorporated by reference into the information
that this Prospectus incorporates).  Requests should be directed to:

                                 Summagraphics Corporation
                                 8500 Cameron Road
                                 Austin, TX 78754
                                 Attention:  Robert B. Sims, Secretary
                                 Telephone Number:  (512) 835-0900

     The Company's (i) Annual Report on Form 10-K which contains audited
financial statements for the fiscal year ended May 31, 1994 (the "1994 10-K"),
(ii) Report on Form 10-Q for the quarter ended August 31, 1994, (iii) Report on
Form 10-Q for the quarter ended November 30, 1994, (iv) Current Report on 
Form 8-K dated November 23, 1994, as amended by Amendment No. 1 on Form 8-K
dated January 23, 1995, containing supplemental consolidated financial
statements for the fiscal years ended May 31, 1992, 1993 and 1994, and reporting
the Company's merger with CAD Delaware (collectively referred to herein as the
"CAD Delaware 8-K"), (v) other reports filed pursuant to Section 13(a) or 15(d)
of the Exchange Act since the 1994 10-K and (vi) Form 8-A, dated July 27, 1987,
containing a description of the Company's Common Stock (Commission File 
No. 0-16071), and including any amendment or report filed for the purpose of 
updating such description, are hereby incorporated by reference into this 
Prospectus.

                                      -1-

 
     All documents filed with the Commission by the Company pursuant to Sections
13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date of this
Prospectus and prior to the termination of the offering relating to this
Prospectus shall be deemed to be incorporated by reference into this Prospectus
and to be a part hereof from the date of filing of such documents.  Any
statement incorporated or deemed to be incorporated by reference herein shall be
deemed to be modified, replaced, or superseded for purposes of this Prospectus
to the extent that a statement contained herein or in any other subsequently
filed document that also is or is deemed to be incorporated by reference herein
modifies or supersedes such statement.  Any such statement so modified or
superseded shall be deemed, except as so modified or superseded, to constitute a
part of this Prospectus.

                                  THE COMPANY

     The Company is engaged in the manufacture and sale of digitizing tablets,
pen plotters, ink jet plotters, thermal transfer printers, and wide format
graphic cutters.  The Company's products are used in applications with high-
performance computer graphics systems, including computer-aided design,
manufacturing, engineering, publishing and graphic arts.  The Company's products
are sold by its sales force primarily through distributors and also to OEMs
which incorporate the Company's products into their own computer products.  The
Company's products may be integrated with most personal computers, including
IBM-compatible personal computers and Apple personal computers, workstations
from Sun Microsystems and Digital Equipment, and publishing systems from Scitex,
and are compatible with over four hundred applications including software such
as AutoCAD, Corel Draw, Adobe Illustrator, Microsoft Windows and Aldus Freehand.
The Company's strategy is to pursue sales and market share growth for its
existing product lines, through product enhancements and new product
introductions, to devote substantial resources to research and development,
including the development of new products for use in connection with pen-based
computing and computer graphics, and, as and if appropriate opportunities arise,
to acquire or develop one or more complementary product lines or businesses
serving the computer graphics markets.

     The Company is seeking to make acquisitions of related or complementary
businesses primarily in exchange for additional shares of the Company's Common
Stock and/or cash.  Effective October 31, 1994, the Company's wholly owned
subsidiary, CAD Nevada, acquired the assets and liabilities of CAD Delaware in
exchange for approximately 510,129 shares of Common Stock in a transaction
accounted for as a pooling of interests.  CAD Nevada is engaged in the mail
order distribution of computer peripheral equipment used in computer assisted
design and related applications, including products manufactured by the Company.
The Company is continually evaluating potential acquisition candidates.
However, no assurance can be given at this time that any acquisitions will
become probable or that any material acquisitions will be consummated.

     The Company is a Delaware corporation formed in 1972.  The Company's
principal executive offices are located at 8500 Cameron Road, Austin, Texas
78754, and its telephone number is (512) 835-0900.

                              RECENT DEVELOPMENTS

     On March 30, 1995, the Company reported preliminary unaudited results for
the third quarter of fiscal 1995. Preliminary unaudited consolidated revenue for
the third quarter of fiscal 1995 was $22.3 million compared to $19.5 million for
the comparable period in fiscal 1994 and represents a 14.5% increase. The
Company attributes the increase to stronger than expected sales in Europe and
the performance of CAD Warehouse which was recently acquired by the Company.
Preliminary unaudited consolidated revenue for the nine months ended February
28, 1995 was $61.3 million compared to $56.1 million over the same period of
fiscal 1994, which represents a 9.4% increase. The Company also reported
unaudited net income of $180,000 and $867,000 for the third quarter of fiscal
1995 and the nine months ended February 28, 1995, respectively,

                                      -2-

 
and earnings per share for such periods of $.04 and $.18, respectively. Net
income for the comparable periods of the prior fiscal year were $679,000 and
$881,000, respectively, and earnings per share for such periods were $.15 and
$.20, respectively. The Company attributes the quarterly decrease in net income
to a delay in initial shipments of and higher than anticipated start-up
production costs for the SummaJet 2 inkjet plotters, increased research and
development costs, and competitive pricing pressures.

                                  RISK FACTORS

     The following facts should be considered carefully in evaluating an
investment in the Common Stock.

Product Concentration.
- --------------------- 

     Digitizers account for approximately 50% of the sales revenues of the
Company.  The Company anticipates that digitizers will continue to account for a
substantial portion of its sales for the foreseeable future.  If for any reason
sales of digitizers were to decline, the Company's business would be adversely
affected.

Competition and Technological Change.
- ------------------------------------ 

     The markets in which the Company sells its products are competitive and are
subject to changes as technology advances.  The Company faces actual and
potential competition from a number of established manufacturers, both domestic
and international, including the Company's largest competitors, CalComp, Inc., a
subsidiary of Lockheed Corporation, and Hewlett-Packard Co., which have
significantly greater financial, technical, manufacturing and marketing
resources than the Company; and Kurta Corporation, Wacom Company, Ltd., Encad,
Inc., and Oce Vandegrinten.  CalComp competes primarily with the Company's
digitizer and plotter products; Kurta competes primarily with the Company's
digitizer products; and Hewlett-Packard competes primarily with the Company's
output products (plotters).  The Company's digitizer products face competition
from manufacturers of mice, including Logitech, Inc.

     The Company believes that its competitive ability also depends on the
quality, pricing, performance and support of its products, manufacturing costs
and the Company's technical capability and successful introduction of new
products and product enhancements.  Inability to match product introductions and
enhancements or price/performance of competitors' products could adversely
affect the Company's market share and profitability.

     In 1994, the Company encountered delays in company shipments of its
SummaJet 2 inkjet plotter associated with patent analysis and the speed of
manufacturing ramp up which adversely affected its financial results for the
fiscal quarter ended February 28, 1995.  This product began shipment in January
1995.

Recent Losses.
- ------------- 

     The Company incurred a net loss of $16.4 million for the year ended May 31,
1993, compared to net income of $2.8 million for the year ended May 31, 1994.
The Company's net income for the six months ended November 30, 1994 was $687,325
compared to a net income of $201,572 for the six months ended November 30, 1993.
The 1993 loss was attributable to a number of factors, including adverse
operating conditions in general of the Company's markets, the incurrence of an
$8.5 million restructuring charge, $1.95 million of expenses attributable to a
patent lawsuit subsequently settled, a write-down of $698,000 of intangible
assets related to an acquisition, a $547,000 increase in the Company's reserve
for bad debts attributable to a large foreign customer and to costs to replace
the Company's CEO, increased promotional expenses, and expenses associated with
increased rent expense after the sale and leaseback of the Company's Austin,
Texas facility.

                                      -3-

 
     The Company has continued to incur a high level of R&D and marketing costs
as it has sought to design and introduce new products in order to remain
competitive in its markets.  Gross margins continue to encounter pressure from
competitive products.  While management believes that the Company will continue
to be profitable and will avoid large operating losses of the magnitude incurred
in 1993, the Company continues to face competitive pressures that can have a
substantial adverse impact on its profitability.  Significant delays in
developing and introducing new products, or a failure to control manufacturing
costs, could contribute to losses in the future, which could be material to the
Company's business.  There can be no assurance that the Company's profitable
operations in recent quarters will continue.

Protection of Proprietary Information.
- ------------------------------------- 

     The Company relies in part upon trade secrets, know-how and patents to
develop and maintain its competitive position.  There can be no assurance that
others will not develop or patent similar technologies or that the
confidentiality agreements upon which the Company relies to protect its trade
secrets and know-how will be enforced by the courts.  There can be no assurance
that the Company has established or will be able to maintain a patent position
sufficient to protect its processes or products.  Other companies have obtained,
and can be expected to obtain in the future, patents covering a variety of
configurations and processes related to the Company's products, which could
require the Company to obtain licenses.  There can be no assurance that the
Company will be able to obtain such licenses, if required, upon commercially
reasonable terms.  The Company has from time to time been involved in litigation
to defend its rights in proprietary information which has required the
expenditure of substantial amounts.  There can be no assurance that the Company
will not in the future incur additional expenses in this regard.

International Sales and Currency Exchange.
- ----------------------------------------- 

     During 1993 and 1994, international sales and operations represented
approximately 44.5% and 45.7%, respectively, of the Company's net revenues.  At
May 31, 1994, the Company had identifiable foreign assets of $18.8 million.
Export sales to foreign countries from the United States totaled $9.8 million in
1993 and $12.1 million in 1994.  In addition, the Company sells products to
systems integrators located within the United States which market the Company's
products worldwide.

     International sales and operations are subject to inherent risks, including
unexpected changes in regulatory requirements, tariffs and other trade barriers,
costs and risks of localizing products for foreign countries, difficulties in
staffing and managing foreign operations, potential difficulties in repatriation
of earnings, and the burdens of complying with a wide variety of foreign laws.
The Company is also at risk of adverse currency fluctuations.  An increase in
the value of the U.S. dollar relative to foreign currencies could make the
Company's products more expensive and, therefore, potentially less competitive
in foreign markets.  As the Company increases its international sales, its net
revenues may also be affected to a greater extent by seasonal fluctuations
resulting from lower levels of business activity which typically occur during
the summer months in Europe.  The Company's results in Western Europe during
1993 and 1994 were negatively affected by the recession there, and sales to
China have decreased as a result of currency fluctuations and changes in
regulatory requirements affecting certain customers. There can be no assurance
that these factors will not have a material adverse effect on the Company's
future international sales and operations, and, consequently, on the Company's
business.

Potential Fluctuations in Quarterly Results.
- ------------------------------------------- 

     The Company achieved profitable operations on a quarterly basis commencing
with the first fiscal quarter of 1994.  Because of the rate of technological
change and competition generally, there can be no assurance that such
profitability will continue on a quarterly basis in the future or that levels of
profitability may not vary over any such quarterly periods.  The

                                      -4-

 
Company operates with relatively small backlog and substantially all of its net
sales in each quarter result from orders booked within a generally short cycle
between order and shipment (typically less than 45 days). Accordingly, if near-
term demand for the Company's products weakens or if significant anticipated
sales in any quarter are not realized as expected, the Company's net sales for
that quarter could be adversely affected. The Company's net sales may fluctuate
as a result of other factors, including increased competition, variations in the
net sales mix, announcements of new products by the Company or its competitors,
delays in shipment of existing or new products and capital spending patterns of
the Company's customers.

Dependence on Key Employees.
- --------------------------- 

     The Company's success if dependent in large measure on key technical, sales
and management personnel, the loss of one or more of whom could adversely affect
its business.  The Company does not have employment agreements with any of its
officers or key personnel, except its President.  The future success of the
Company will depend in large part on its continuing ability to attract and
retain talented, qualified employees.  While the Company to date has not
experienced any difficulty in attracting and retaining qualified employees,
there can be no assurance that the Company can retain its key employees or that
it can attract, assimilate and retain its key employees or that it can attract,
assimilate and retain other skilled technical personnel.

Limited Sources of Supply.
- ------------------------- 

     Certain components used in, and certain of the Company's products, are
currently available from only one or a limited number of sources.  The Company
has no long-term contracts with these suppliers.  The Company's inability to
obtain sufficient supplies of sole-or limited-source components or to develop
alternative sources as needed has in the past and could in the future result in
delays or reductions in product shipments.  Operating results also could be
materially adversely affected by receipt of defective components or an increase
in component prices.  Because the Company believes innovation is important to
its strategy, Company products under development may incorporate third-party
components that are under development, often with the assistance of the Company.
Typically, these component parts are not available until a short time before the
scheduled commercial shipment of the Company's products.  Components may not
become available, may be delayed or may have quality problems, which could
result in production and sales delays or cancellations of orders for Company
products.  Such factors would have a material adverse effect on the Company's
operating results.

Possible Anti-Takeover Effects of Certain Charter and Bylaw Provisions.
- ---------------------------------------------------------------------- 

     The Company's Third Restated Certificate of Incorporation (the "Charter")
and Bylaws contain provisions that may discourage acquisition bids for the
Company.  The Company has a substantial amount of authorized but unissued
capital stock available for issuance.  The Company's Charter contains provisions
which authorize the Board of Directors, without the consent of the shareholders,
to issue additional shares of Common Stock and issue shares of Preferred Stock
in series, including establishment of the rights, powers and preferences,
including voting rights, of holders of the Preferred Stock, and grant authority
to the Board to amend the Company's Bylaws. Additionally, the Company's Bylaws
empower the Board to increase or decrease the number of directors, subject to
certain limitations, and specify that directors will generally hold office until
the next annual meeting of shareholders. These provisions may have the effect,
either alone or in combination with each other, of (i) limiting the price that
certain investors might be willing to pay in the future for shares of the Common
Stock, (ii) delaying, deferring or otherwise discouraging an acquisition or
change in control of the Company deemed undesirable by the Board of Directors or
(iii) adversely affecting the voting power of shareholders who own Common Stock.

                              SELLING SHAREHOLDERS

                                      -5-

 
     The Selling Shareholders listed in the following table have agreed to sell
the number of shares of Common Stock set forth opposite their name.  The table
sets forth information with respect to the beneficial ownership of the Company's
Common Stock by the Selling Shareholders immediately prior to this offering and
as adjusted to reflect the sale of shares of Common Stock pursuant to the
offering.  All information with respect to the beneficial ownership has been
furnished by the Selling Shareholders:


 
                             BENEFICIAL OWNERSHIP                BENEFICIAL OWNERSHIP
                              PRIOR TO OFFERING                   AFTER OFFERING (1)
                            ----------------------              ----------------------
                                                    SHARES TO
                            NUMBER OF  PERCENT OF   BE OFFERED  NUMBER OF  PERCENT OF
NAME OF BENEFICIAL OWNER     SHARES       CLASS      FOR SALE    SHARES       CLASS
- --------------------------  ---------  -----------  ----------  ---------  -----------
                                                            
 
 John G. Panutsos             255,065         5.6%      66,661    188,404         4.1%
 Rosemary Wollet              127,532         2.8%      33,331     94,201         2.1%
 David C. Hoffer              127,532         2.8%      33,331     94,201         2.1%
- ----------------------

     (1)  Assumes all the shares of Common Stock that may be offered are sold.


                              PLAN OF DISTRIBUTION

     The sale of the Common Stock offered hereby may be effected from time to
time directly or by one or more broker-dealers or agents, in one or more
transactions (which may involve crosses and block transactions) on the Nasdaq
National Market, in negotiated transactions, or through a combination of such
methods of distribution, at prices related to prevailing market prices or at
negotiated prices.

     In the event one or more broker-dealers or agents agree to sell the Common
Stock, they may do so by purchasing the Common Stock as principals or by selling
the Common Stock as agent for the Selling Shareholders.  Any such broker-dealers
may receive compensation in the form of discounts, concessions, or commissions
from the Selling Shareholders and/or the purchasers of the shares of Common
Stock for which such broker-dealer may act as agent or to whom they sell as
principal, or both (which compensation as to a particular broker-dealer may be
in excess of customary compensation).  The Company may be required to enter into
indemnity agreements with any such broker-dealers or agents providing assurances
as to the accuracy of this Prospectus and providing indemnity to any such
broker-dealer or agent in the event of any material misstatement or omission of
fact in this Prospectus.

     Under applicable rules and regulations under the Exchange Act, any person
engaged in a distribution of the Common Stock may not simultaneously engage in
market-making activities with respect to the Company's Common Stock for a period
of two business days prior to the commencement of such distribution.  In
addition and without limiting the foregoing, the Selling Shareholders will be
subject to applicable provisions of the Exchange Act and the rules and
regulations thereunder, including, without limitation, Rule 10b-6.

     In order to comply with certain states' securities laws, if applicable, the
Common Stock will be sold in such jurisdictions only through registered or
licensed brokers or dealers.  In certain states, the Common Stock may not be
sold unless the Common Stock has been registered or qualified for sale in such
state or an exemption from registration or qualification is available and is
complied with.

     The shares offered hereby are being registered pursuant to rights granted
the Selling Shareholders in the Asset Purchase Agreement providing for the
acquisition of CAD Delaware.  The Asset Purchase Agreement requires the Company
to indemnify the Selling Shareholders against liabilities, including liabilities
under the Securities Act of 1933, that may arise as a consequence of any
material misstatement or omission of fact in this Prospectus.  The Asset
Purchase Agreement provides that the Selling Shareholders will not, without the
Company's prior 

                                      -6-

 
consent, sell on any trading day an aggregate number of shares of Common Stock
in excess of the greater of 3,000 shares or 20% of the average daily trading
volume of the Common Stock for the preceding ten trading days. All of the
proceeds generated from the sale of the shares of Common Stock offered hereby
will be immediately deposited into the accounts of the Selling Shareholders.

                                USE OF PROCEEDS

     The Company will not receive any proceeds from the offering.

                                 LEGAL MATTERS

     The validity of the Common Stock offered hereby has been passed upon for
the Company by Robert B. Sims, Senior Vice President and General Counsel of the
Company.

                                    EXPERTS

     The historical consolidated financial statements and schedules of
Summagraphics Corporation and subsidiaries as of May 31, 1993 and 1994, and for
each of the years in the three-year period ended May 31, 1994, and the
supplemental consolidated financial statements of Summagraphics Corporation and
subsidiaries as of May 31, 1993 and 1994, and for each of the years in the
three-year period ended May 31, 1994, have been incorporated by reference herein
and in the Registration Statement in reliance upon the reports of KPMG Peat
Marwick LLP, independent certified public accountants, incorporated by reference
herein, and upon the authority of said firm as experts in accounting and
auditing.  The reports of KPMG Peat Marwick LLP covering the May 31, 1994
historical and supplemental consolidated financial statements refer to a change
in the method of accounting for income taxes in 1993.  In addition, the report
of KPMG Peat Marwick LLP on the supplemental consolidated financial statements
indicates that the supplemental consolidated financial statements give
retroactive effect to the merger of Summagraphics Corporation and CAD Warehouse,
Inc. on November 10, 1994, which has been accounted for as a pooling of
interests.  Generally accepted accounting principles proscribe giving effect to
a consummated business combination accounted for by the pooling of interests
method in financial statements that do not include the date of consummation.
These supplemental financial statements do not extend through the date of
consummation.  However, they will become the historical consolidated financial
statements of Summagraphics Corporation and subsidiaries after financial
statements covering the date of consummation of the business combination are
issued.

          The financial statements of CAD Warehouse, Inc. as of September 30,
1994 and December 31, 1993 and for the nine-month period and the year then ended
have been incorporated by reference herein and in the Registration Statement in
reliance upon the report of KPMG Peat Marwick LLP, independent certified public
accountants, incorporated by reference herein, and upon the authority of said
firm as experts in accounting and auditing.

                                      -7-

 
                                    PART II


ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

 
                             
Registration fee                 $   345
Accounting fees and expenses      10,000
Legal fees and expenses           10,000
Miscellaneous expenses               500
                                 -------
 
     Total                       $20,845
                                 =======
 
- ---------------


*  Estimated

     All of the above expenses will be paid by the Company.


ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     The Registrant's Third Restated Certificate of Incorporation and Bylaws
provide, consistent with the provisions of the Delaware General Corporation Law,
that no director of the Registrant will be personally liable to the Company or
any of its shareholders for monetary damages arising from the director's breach
of fiduciary duty as a director.  However, this does not apply with respect to
any action in which the director would be liable under Section 174 of Title 8 of
the Delaware General Corporation Law nor does it apply with respect to any
action in which the director (i) has breached his duty of loyalty to the Company
and its shareholders, (ii) does not act in good faith or, in failing to act,
does not act in good faith, (iii) has acted in a manner involving intentional
misconduct or a knowing violation of law or, in failing to act, has acted in a
manner involving intentional misconduct or a knowing violation of law, or (iv)
has derived an improper personal benefit.

     Pursuant to the provisions of Section 145 of the Delaware General
Corporation Law, every Delaware corporation has the power to indemnify any
person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action, suit or proceeding (other than an
action by or in the right of the corporation) by reason of the fact that he is
or was a director, officer, employee or agent of any corporation, partnership,
joint venture, trust or other enterprise, against any and all expenses,
judgments, fines and amounts paid in settlement and reasonably incurred in
connection with such action, suit or proceeding.  The power to indemnify applies
only if such person acted in good faith and in a manner he reasonably believed
to be in the best interest, or not opposed to the best interest, of the
corporation and with respect to any criminal action or proceeding, had no
reasonable cause to believe his conduct was unlawful.

     The power to indemnify applies to actions brought by or in the right of the
corporation as well, but only to the extent of defense and settlement expenses
and not to any satisfaction of a judgment or settlement of the claim itself, and
with the further limitation that in such actions no indemnification shall be
made in the event of any adjudication unless the court, in its discretion,
believes that in light of all the circumstances indemnification should apply.

     To the extent any of the persons referred to in the two immediately
preceding paragraphs is successful in the defense of the actions referred to
therein, such person is entitled, pursuant to Section 145, to indemnification as
described above.

                                      II-1

 
     The directors and officers of the Registrant are insured under a directors'
and officers' liability insurance policy insuring directors and officers against
liabilities for which they are entitled to indemnity as described above in the
event the Registrant is unable or fails to make payment.

     Insofar as indemnification by the Registrant for liabilities arising under
the Securities Act of 1933 may be permitted to directors, officers or persons
controlling the Registrant pursuant to the foregoing provisions, the Registrant
has been informed that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Securities Act
and is therefore unenforceable.

ITEM 16.  EXHIBITS.

     The Exhibits to this Registration Statement are listed in the Index to
Exhibits on page II-6 of this Registration Statement, which Index is
incorporated herein by reference.

ITEM 17.  UNDERTAKINGS.

     (a) The undersigned Registrant hereby undertakes:

          (1) To file, during any period in which offers or sales are being
     made, a post-effective amendment to this Registration Statement:

               (i) To include any prospectus required by Section 10(a)(3) of the
               Securities Act;

               (ii) To reflect in the prospectus any facts or events arising
               after the effective date of the Registration Statement (or the
               most recent post-effective amendment thereof) which, individually
               or in the aggregate, represent a fundamental change in the
               information set forth in the Registration Statement;

               (iii)  To include any material information with respect to the
               plan of distribution not previously disclosed in the Registration
               Statement or any material change to such information in the
               Registration Statement;

     provided, however, that paragraphs (1)(i) and (1)(ii) do not apply if the
     --------  -------                                                        
     information required to be included in a post-effective amendment by those
     paragraphs is contained in periodic reports filed by the Registrant
     pursuant to Section 13 or Section 15(d) of the Exchange Act that are
     incorporated by reference in the Registration Statement.

          (2) That, for the purpose of determining any liability under the
     Securities Act, each such post-effective amendment shall be deemed to be a
     new registration statement relating to the securities offered therein, and
     the offering of such securities at that time shall be deemed to be the
     initial bona fide offering thereof.

          (3) To remove from registration by means of a post-effective amendment
     any of the securities being registered which remain unsold at the
     termination of the offering.

     (b) The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to Section 13(a) and 15(d) of the Exchange
Act (and, where applicable, each filing of an employee 

                                      II-2

 
benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that
is incorporated by reference in the Registration Statement shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

     (c) Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to directors, officers, and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Commission such indemnification is
against public policy as expressed in the Securities Act and is, therefore,
unenforceable.  In the event that a claim for indemnification against such
liabilities (other than the payment by the Registrant of expenses incurred or
paid by a director, officer, or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer, or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.

                                      II-3

 
                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, as amended, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-3 and has duly caused this Amendment to
be signed on its behalf by the undersigned, thereunto duly authorized, in the
City of Austin, State of Texas, on April 8, 1995.

                                    SUMMAGRAPHICS CORPORATION


                                    By:      /s/ Michael S. Bennett
                                          ------------------------------
                                         Michael S. Bennett
                                         President and Chief Executive Officer

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Amendment has been signed below by the following persons on behalf of the
Registrant in the capacities indicated on April 8, 1995.

SIGNATURE                         TITLE
- ---------                         -----


/s/ Michael S. Bennett     President, Chief Executive Officer and
- ----------------------     Director (Principal Executive Officer) 
Michael S. Bennett                                        


/s/ David G. Osowski       Senior Vice President, Controller and Treasurer
- --------------------       (Principal Financial and Accounting Officer)
David G. Osowski         


                           Director
- ---------------
Ken Draeger


/s/ Andrew Harris*         Director
- ------------------                 
Andrew Harris


/s/ G. Glenn Henry*        Director
- -------------------                
G. Glenn Henry


/s/ Stephen J. Keane*      Director
- ---------------------              
Stephen J. Keane


/s/ Dennis G. Sisco*       Director
- --------------------               
Dennis G. Sisco


*By /s/ Michael S. Bennett
- --------------------------
Michael S. Bennett, Attorney-in-Fact

                                      II-4

 
                        CONSENT OF INDEPENDENT AUDITORS

The Board of Directors of
Summagraphics Corporation:

     We consent to the use of our reports incorporated herein by reference and
to the reference to our Firm under the heading "Experts" in the prospectus.  Our
report on the historical May 31, 1994 consolidated financial statements is
incorporated by reference from the Company's 1994 Annual Report on Form 10-K;
our report on the supplemental May 31, 1994 consolidated financial statements is
incorporated by reference from the Company's January 23, 1995 Amendment No. 1 on
Form 8-K; and our report on September 30, 1994 CAD Warehouse, Inc. financial
statements is incorporated by reference from the Company's November 23, 1994
Form 8-K.

     Our reports covering the historical and supplemental consolidated financial
statements of Summagraphics Corporation and subsidiaries refer to a change in
the method of accounting for income taxes in 1993.  Our report with respect to
the supplemental consolidated financial statements indicates that the
supplemental consolidated financial statements give retroactive effect to the
merger of Summagraphics Corporation and CAD Warehouse, Inc. on November 10,
1994, which has been accounted for as a pooling of interests.  Generally
accepted accounting principles proscribe giving effect to a consummated business
combination accounted for by the pooling of interests method in financial
statements that do not include the date of consummation.  These supplemental
financial statements do not extend through the date of consummation.  However,
they will become the historical consolidated financial statements of
Summagraphics Corporation and subsidiaries after financial statements covering
the date of consummation of the business combination are issued.



                                 KPMG PEAT MARWICK LLP

Austin, Texas
April 8, 1995

                                      II-5

 
                               INDEX TO EXHIBITS

EXHIBIT
NUMBER                   DESCRIPTION OF EXHIBITS                        Page
- ------                   -----------------------                        ----

 
   4.1   Specimen of Common Stock Certificate (incorporated by             --
         reference from Exhibit 4.3 to the Company's Registration            
         Statement on Form S-1 (Registration No. 33-15658)).                 
                                                                             
   4.2   Asset Purchase Agreement (incorporated by reference from          --
         Exhibit 2.1 to the Company's Report on Form 8-K dated               
         November 23, 1994).                                                 
                                                                             
 **5.1   Opinion of Robert B. Sims, Senior Vice President and              --
         General Counsel of the Registrant.                                  
                                                                             
**23.1   Consent of Robert B. Sims, Senior Vice President and              --
         General Counsel of the Registrant (contained in Exhibit 5).         
                                                                             
 *23.2   Consent of Independent Auditors (included in Part II on           --
         page II-5 of this Registration Statement).                          
                                                                             
**24.1   Power of Attorney.                                                -- 

- -----------------------------

 *   Filed Herewith.
**   Previously Filed.

                                      II-6