EXHIBIT 3.1



                           CERTIFICATE OF DESIGNATIONS
                                     OF THE
                      SERIES B CONVERTIBLE PREFERRED STOCK
                                       OF
                             3D SYSTEMS CORPORATION


             PURSUANT TO SECTION 151 OF THE GENERAL CORPORATION LAW
                            OF THE STATE OF DELAWARE


     I, Brian K. Service, Chief Executive Officer of 3D SYSTEMS CORPORATION (the
"CORPORATION"), a corporation organized and existing under the laws of the State
of Delaware, in accordance with the provisions of Section 151 of the Delaware
General Corporation Law ("DGCL"), DO HEREBY CERTIFY that at a meeting of the
Board of Directors on May 2, 2003, at which meeting a quorum was present, that
the following resolution was adopted:

     RESOLVED, that pursuant to the authority vested in the Board of Directors
of the Corporation in accordance with the provisions of the Corporation's
Certificate of Incorporation, as amended (the "AMENDED CERTIFICATE"), a new
series of Preferred Stock of the Corporation be, and hereby is, created, and the
powers, designations, preferences and relative, participating, optional or other
special rights of the shares of such series, and the qualifications, limitations
or restrictions thereof, be, and hereby are, as follows:

1.   DESIGNATION AND AMOUNT. This resolution shall provide for a single series
     of convertible preferred stock which shares of such series shall be
     designated as Series B Convertible Preferred Stock (the "SERIES B PREFERRED
     STOCK") and the number of shares constituting such series initially shall
     be 2,670,000, at $.001 par value per share. The stated value of each share
     of Series B Preferred Stock is $6.00 (the "SERIES B ISSUANCE Price"). The
     date on which shares of Series B Preferred Stock are first issued hereunder
     is hereinafter referred to as the "SERIES B ISSUANCE DATE."

2.   DIVIDENDS. Holders of Series B Preferred Stock shall be entitled to
     receive, when, as and if declared by the Board of Directors, but only out
     of funds that are legally available therefor, cash dividends at the rate of
     eight percent (8.00%) of the Series B Issuance Price per share per annum
     (as adjusted for any stock dividends, combinations, splits,
     recapitalizations and the like with respect to such shares); PROVIDED,
     HOWEVER, unless, on or prior to the first anniversary of the Series B
     Issuance Date, a registration statement is declared effective by the
     Securities and Exchange Commission covering the resale of the securities
     issued or issuable upon conversion of the Series B Preferred Stock in
     accordance with the provisions of that certain Securities Purchase
     Agreement by and among the Corporation and the purchasers identified
     therein (the "AGREEMENT"), then in such event the dividends provided for in
     this Section 2 shall increase to the rate of ten percent (10.00%) per share
     per annum commencing on the close of business on the first anniversary of
     the Series B Issuance Date (as adjusted for any stock dividends,
     combinations, splits, recapitalizations and the like with respect to such
     shares). The holders of Series B Preferred Stock shall be paid in
     preference to the holders of the Series A Preferred Stock and the Common
     Stock of the Corporation and to the holders of any other capital


                                     Page 1


     stock of the Corporation that rank junior to the Series B Preferred Stock
     with respect to the payment of dividends or rights upon liquidation
     ("JUNIOR STOCK"). Dividends shall accrue from and including the date of
     issuance and shall be computed on the basis of a 360-day year consisting of
     twelve 30-day months, and shall be payable semi-annually, on the sixth
     month and the twelfth month anniversary of the Series B Issuance Date. Such
     dividends shall be cumulative to the extent not declared and paid by the
     Board of Directors. No Dividends shall be paid on the Junior Stock unless
     or until all accrued and unpaid Dividends shall have first been declared
     and paid in full with respect to the Series B Preferred Stock.

3.   LIQUIDATION PREFERENCE.

(a)  Upon any liquidation, dissolution or winding up of the Corporation, whether
     voluntary or involuntary (each, a "LIQUIDATION EVENT"), before any
     distribution or payment shall be made to the holders of any Junior Stock,
     subject to the rights of any series of Preferred Stock that may from time
     to time come into existence, each holder of Series B Preferred Stock shall
     be entitled to be paid out of the assets of the Corporation, (i) an amount
     in cash per share equal to the sum of the Series B Issuance Price for each
     outstanding share of Series B Preferred Stock (as adjusted for any stock
     dividends, combinations, splits, recapitalizations and the like with
     respect to such shares), and (ii) an amount equal to all accrued or
     declared but unpaid dividends on such shares (collectively, the
     "LIQUIDATION PREFERENCE"). If, upon any Liquidation Event, the assets of
     the Corporation shall be insufficient to make payment in full to all
     holders of Series B Preferred Stock of the Liquidation Preference, subject
     to the rights of any series of Preferred Stock that may from time to time
     come into existence, then the entire assets and funds of the Corporation
     legally available for distribution shall be distributed ratably among the
     holders of Series B Preferred Stock in proportion to the preferential
     amount each such holder is otherwise entitled to receive.

(b)  REMAINING ASSETS. After the payment of the full Liquidation Preference as
     set forth in Section 3(a) above and any other distribution that may be
     required with respect to any series of Preferred Stock that may from time
     to time come into existence, the assets of the Corporation legally
     available for distribution, if any, shall be distributed ratably to the
     holders of the Common Stock and Preferred Stock on an as converted basis.

(c)  NOTICE OF LIQUIDATION EVENT. The Corporation shall give each record holder
     of Series B Preferred Stock written notice of any impending Liquidation
     Event no later than twenty (20) days prior to the stockholders' meeting
     called to approve such transaction, or twenty (20) days prior to the
     closing of such Liquidation Event, whichever is earlier, and shall also
     notify such holders in writing of the final approval of such Liquidation
     Event. The first of such notices shall describe the material terms and
     conditions of the impending Liquidation Event (including, without
     limitation, the amount of proceeds to be paid to each share in connection
     with the Liquidation Event) and the provisions of this Section 3, and the
     Corporation shall thereafter give such holders prompt notice of any
     material changes. The Liquidation Event shall in no event take place sooner
     than twenty (20) days after the Corporation has given the first notice
     provided for herein or sooner than twenty (20) days after the Corporation
     has given notice of any material changes provided for herein; PROVIDED,
     HOWEVER, that such periods may be shortened upon the written consent of the
     holders of Series B Preferred Stock that are entitled to such notice rights
     or similar notice rights and that represent at least a majority of the
     voting power of all then


                                     Page 2


     outstanding shares of Series B Preferred Stock and that are entitled to
     such notice rights or similar notice rights.

4.   REDEMPTION.

(a)  REDEMPTION AT THE OPTION OF THE CORPORATION. At any time after the third
     anniversary of the Series B Issuance Date, the Corporation may redeem, from
     any source of funds legally available therefor, all, but not less than all
     of the Series B Preferred Stock (the "REDEMPTION OPTION"). Such redemption
     of the Series B Preferred Stock shall be effected at a price (the
     "REDEMPTION PRICE"), paid in cash, equal to the sum of the Series B
     Issuance Price plus any and all accrued or declared and unpaid dividends,
     without interest or premium.

(b)  MANDATORY REDEMPTION. If any shares of Series B Preferred Stock remain
     outstanding on the tenth anniversary of the Series B Issuance Date, the
     Corporation shall redeem, from any source of funds legally available
     therefor, all, but not less than all of the Series B Preferred Stock (the
     "MANDATORY REDEMPTION"). Such redemption of the Series B Preferred Stock
     shall be effected at a price equal to the Redemption Price, paid in cash,
     without interest or premium.

(c)  REDEMPTION UPON A LIQUIDITY EVENT. Immediately prior to the occurrence of a
     Liquidity Event, the Corporation shall redeem, from any source of funds
     legally available therefor, all, but not less than all of the Series B
     Preferred Stock (the "LIQUIDITY EVENT REDEMPTION"). Such redemption of the
     Series B Preferred Stock shall be effected at a price equal to the
     Redemption Price, paid in cash, without interest or premium. The term,
     "LIQUIDITY EVENT" shall have the following meaning:

     1.   Any consolidation or merger of the Corporation with or into any other
          corporation or other entity or person, or any other corporate
          reorganization, in which the stockholders of the Corporation
          immediately prior to such consolidation, merger, reorganization, or
          any similar corporate transaction, own less than fifty percent (50%)
          of the voting power of the surviving corporation immediately after
          such consolidation, merger or reorganization, or any transaction or
          series of related transactions to which the Corporation is a party in
          which in excess of fifty percent (50%) of the Corporation's voting
          power is transferred, excluding any consolidation or merger effected
          exclusively to change the domicile of the Corporation; and

     2.   Any sale, transfer, lease, conveyance or other disposition of all or
          substantially all of the assets of the Corporation and its
          subsidiaries on a consolidated basis to a third party in any
          transaction or series of related transactions.

(d)  MECHANICS OF REDEMPTION.

     1.   Subject to Section 4(e), the Redemption Option shall be exercised, and
          the Mandatory Redemption shall be effected, by written notice (the
          "REDEMPTION Notice") from the Corporation to the holders of the Series
          B


                                     Page 3


          Preferred Stock setting forth the date fixed for such redemption (the
          "REDEMPTION DATE"), which date shall be not fewer than thirty (30)
          days but not more than sixty (60) days following the date of the
          Redemption Notice.

     2.   Subject to Section 4(e), the Liquidity Event Redemption shall be
          exercised by delivery of a Redemption Notice from the Corporation to
          the holders of the Series B Preferred Stock notifying such holders of
          an impending Liquidity Event and that the Corporation elects to redeem
          all but not less than all outstanding shares of the Series B Preferred
          Stock immediately prior to such Liquidity Event. Such Redemption
          Notice shall be given no later than twenty (20) days prior to the
          stockholders' meeting called to approve such transaction, or twenty
          (20) days prior to the closing of such Liquidity Event, whichever is
          earlier, and shall also notify such holders in writing of the final
          approval of such Liquidity Event. The first of such notices shall
          describe the material terms and conditions of the impending Liquidity
          Event (including, without limitation, the amount of proceeds to be
          paid to each share of capital stock of the Corporation in connection
          with the Liquidity Event) and the provisions of this Section 4, and
          the Corporation shall thereafter give such holders prompt notice of
          any material changes. The Liquidity Event shall in no event take place
          sooner than twenty (20) days after the Corporation has given the first
          notice provided for herein or sooner than twenty (20) days after the
          Corporation has given notice of any material changes provided for
          herein; PROVIDED, HOWEVER, that such periods may be shortened upon the
          written consent of the holders of Series B Preferred Stock that are
          entitled to such notice rights or similar notice rights and that
          represent at least a majority of the voting power of all then
          outstanding shares of Series B Preferred Stock and that are entitled
          to such notice rights or similar notice rights. The exercise of the
          Liquidity Event Redemption shall be conditioned upon the actual
          occurrence of the Liquidity Event that is disclosed in the applicable
          Redemption Notice.

     3.   The Redemption Notice shall be delivered by means of first class mail,
          postage paid, addressed to the holders of record of the shares of
          Series B Preferred Stock, at their respective addresses then appearing
          on the books of the Corporation. Each such notice shall specify (i)
          such holder's right to redemption, (ii) the applicable Redemption Date
          and (iii) the applicable Redemption Price. If upon the occurrence of
          the Redemption Date, the assets and funds of the Corporation legally
          available to be distributed among the holders of the Series B
          Preferred Stock shall be insufficient to permit the payment to such
          holders of the full aforesaid amounts, then the entire assets and
          funds of the Corporation legally available for distribution shall be
          distributed, subject to paragraph (e) below, ratably among the holders
          of the Series B Preferred Stock in proportion to the applicable
          Redemption Price amount each such holder is otherwise entitled to
          receive. At any time thereafter when additional funds of the
          Corporation


                                     Page 4


          are legally available for the redemption of Series B Preferred Stock,
          such funds shall immediately be used to redeem the balance of the
          Series B Preferred Stock which the Corporation has become obligated to
          redeem on the Redemption Date but which it has not redeemed.

(e)  PRIORITY OF REDEMPTION. The Corporation shall not redeem shares of Junior
     Stock prior to the redemption of all outstanding shares of Series B
     Preferred Stock. Any redemption effected pursuant to this Section 4 shall
     be made on a pro rata basis among the holders of the Series B Preferred
     Stock that is being redeemed, in proportion to the number of shares held by
     such holders.

(f)  DELIVERY OF CERTIFICATES. The holder of any shares of Series B Preferred
     Stock to be redeemed pursuant to the redemption rights in Section 4 shall
     not be entitled to receive payment of the applicable Redemption Price for
     such shares until such holder shall cause to be delivered, to the place
     specified in the Redemption Notice (i) the certificates representing such
     shares of Series B Preferred Stock (or delivery of a customary affidavit of
     loss with an indemnity reasonably satisfactory to the Corporation) and (ii)
     transfer instrument(s) reasonably satisfactory to the Corporation and
     sufficient to transfer such shares of Series B Preferred Stock to the
     Corporation free of any adverse interest.

(g)  TERMINATION OF PREFERRED STOCK. Upon the redemption of any share of Series
     B Preferred Stock pursuant to this Section 4, such share shall (provided
     the applicable Redemption Price payable upon redemption of such share has
     been paid or properly provided for) be deemed to cease to be outstanding,
     and all rights of any Person other than the Corporation in such share shall
     be extinguished on the date fixed for redemption for such share (plus all
     rights to receive future dividends with respect to such share), except for
     the right to receive the applicable Redemption Price, without interest, in
     accordance with the provisions of this Section 4, subject to the applicable
     escheat laws.

(h)  CONVERSION OF PREFERRED STOCK. In the event that any shares of Series B
     Preferred Stock shall be converted into Common Stock prior to the close of
     business on the date fixed for redemption, (i) the Corporation shall not be
     obligated nor have the right to redeem such shares and (ii) any funds which
     shall have been set aside for the payment of the applicable Redemption
     Price shall be returned to the Corporation (subject to declared dividends
     payable to holders of such on the record date for such dividends being so
     payable regardless of whether such shares are converted subsequent to the
     such record date).

     5.   CONVERSION.

     The holders of Series B Preferred Stock shall have the following conversion
rights (the "CONVERSION RIGHTS"):

(a)  OPTIONAL CONVERSION. At any time and from time to time after the issuance
     of such shares, each share of Series B Preferred Stock shall be
     convertible, at the option of the holder thereof, at the principal
     corporate office of the Corporation or any transfer agent for such stock,
     into such number of fully paid and nonassessable shares of Common Stock as
     is determined, with respect to each share of Series B Preferred Stock, by
     dividing the amount of the


                                     Page 5


     Liquidation Preference on the date the certificate is surrendered for
     conversion by the Series B Conversion Price (as defined herein) in effect
     on the date the certificate is surrendered for conversion. The initial
     Series B Conversion Price per share for the Series B Preferred Stock (the
     "CONVERSION PRICE ") shall be the Series B Issuance Price; PROVIDED,
     HOWEVER, that the Conversion Price shall be subject to adjustment as set
     forth in this Section 5.

(b)  AUTOMATIC CONVERSION. Each share of Series B Preferred Stock shall
     automatically be converted by the Corporation into shares of Common Stock
     at the Series B Conversion Price at the time on the date specified by
     written consent or agreement of the holders of at least a majority of the
     then outstanding shares of Series B Preferred Stock.

(c)  MECHANICS OF CONVERSION. Before any holder of Series B Preferred Stock
     shall be entitled to convert the same into shares of Common Stock pursuant
     to Section 5(a) or upon the occurrence of the event specified in Section
     5(b), as the case may be, such holder shall surrender the certificate or
     certificates therefor, duly endorsed, (or deliver a customary affidavit of
     loss with indemnity) at the principal corporate office of the Corporation
     or of any transfer agent for the Series B Preferred Stock, and shall give
     written notice to the Corporation at its principal corporate offices, of
     the election to convert the same and shall state therein the name or names
     in which the certificate or certificates for shares of Common Stock are to
     be issued; PROVIDED, HOWEVER, that any failure by a holder to comply with
     these provisions shall not have any effect on the automatic conversion of
     such holder's shares, which shall in any event convert in accordance with
     Section 5(b). The Corporation shall, as soon as practicable thereafter,
     issue and deliver to such holder of Series B Preferred Stock, or to the
     nominee or nominees of such holder, a certificate or certificates for the
     number of shares of Common Stock to which such holder shall be entitled as
     aforesaid. The issuance of certificates for shares of Common Stock upon
     conversion of the Series B Preferred Stock shall be made without charge to
     the holders of Series B Preferred Stock for any issuance tax in respect
     thereof or other cost incurred by the Corporation in connection with such
     conversion and the related issuance of the Common Stock; PROVIDED, HOWEVER,
     that the Corporation shall not be responsible for the payment of any tax or
     other charge imposed in connection with any transfer involved in the issue
     and delivery of shares of Common Stock in a name other than that in which
     the shares of Series B Preferred Stock so conveyed were registered. Such
     conversion shall be deemed to have been made immediately prior to the close
     of business on the date of such surrender of the shares of Series B
     Preferred Stock to be converted, and the person or persons entitled to
     receive the shares of Common Stock issuable upon such conversion shall be
     treated for all purposes as the record holder or holders of such shares of
     Common Stock as of such date. The Corporation shall not close its books
     against the transfer of Series B Preferred Stock or of shares of Common
     Stock issued or issuable upon conversion of the Series B Preferred Stock in
     any manner which interferes with the timely conversion of the Series B
     Preferred Stock.

(d)  ADJUSTMENT FOR STOCK SPLITS AND COMBINATIONS. If the Corporation shall at
     any time after the Series B Issuance Date effect a subdivision (by any
     stock split or otherwise) of the outstanding Common Stock without a
     corresponding subdivision of the Series B Preferred Stock, the applicable
     Conversion Price in effect immediately before that subdivision shall be
     proportionately decreased. Conversely, if the Corporation shall at any time
     after the Series B Issuance Date combine the outstanding shares of Common
     Stock into a smaller number of shares without a corresponding combination
     of the Series B Preferred Stock, the applicable Conversion


                                     Page 6


     Price in effect immediately before the combination shall be proportionately
     increased. Any adjustment under this Section 5(d) shall become effective at
     the close of business on the date the subdivision or combination becomes
     effective.

(e)  ADJUSTMENT FOR COMMON STOCK DIVIDENDS AND DISTRIBUTIONS. If the Corporation
     at any time after the Series B Issuance Date declares, or fixes a record
     date for the determination of holders of Common Stock entitled to receive,
     a dividend or other distribution payable in additional shares of Common
     Stock, in each such event the Conversion Price that is then in effect shall
     be decreased as of the time of such event or, if such record date is fixed,
     as of the close of business on such record date, by multiplying the
     applicable Conversion Price then in effect by a fraction (i) the numerator
     of which is the total number of shares of Common Stock issued and
     outstanding immediately prior to the time of such event or the close of
     business on such record date and (ii) the denominator of which is the total
     number of shares of Common Stock issued and outstanding immediately prior
     to the time of such event or the close of business on such record date,
     plus the number of shares of Common Stock issuable in payment of such
     dividend or distribution; provided, however, that if such record date is
     fixed and such dividend is not fully paid or if such distribution is not
     fully made on the date fixed therefor, the applicable Conversion Price
     shall be recomputed accordingly as of the close of business on such record
     date and thereafter the applicable Conversion Price shall be adjusted
     pursuant to this Section 5(e) to reflect the actual payment of such
     dividend or distribution.

(f)  ADJUSTMENT FOR RECLASSIFICATION, EXCHANGE AND SUBSTITUTION. If at any time
     after the Series B Issuance Date, the Common Stock issuable upon the
     conversion of the Series B Preferred Stock is changed into the same or a
     different number of shares of any other class or classes of stock, whether
     by recapitalization, reclassification or otherwise (other than a
     reorganization, merger, consolidation or other business combination as
     provided for below), in any such event each holder of Series B Preferred
     Stock shall have the right thereafter to convert such stock into the kind
     and amount of stock and other securities and property receivable upon such
     recapitalization, reclassification or other change by holders of the number
     of shares of Common Stock into which such shares of Series B Preferred
     Stock could have been converted immediately prior to such recapitalization,
     reclassification or change, all subject to further adjustment as provided
     herein or with respect to such other securities or property by the terms
     thereof.

(g)  REORGANIZATIONS, MERGERS OR CONSOLIDATIONS. If at any time after the
     Initial Series B Issuance Date, there is a capital reorganization of the
     Common Stock or the merger or consolidation of the Corporation with or into
     another corporation or another entity or Person as a part of such capital
     reorganization, provision shall be made so that the holders of the Series B
     Preferred Stock shall thereafter be entitled to receive upon conversion of
     the Series B Preferred Stock the number of shares of stock or other
     securities or property of the Corporation or otherwise to which a holder of
     Common Stock, deliverable upon conversion thereof, would have been entitled
     on such capital reorganization, subject to adjustment in respect of such
     stock or securities by the terms thereof. In any such case, appropriate
     adjustment shall be made in the application of the provisions of this
     Section 5 with respect to the rights of the holders of Series B Preferred
     Stock after the capital reorganization to the end that the provisions of
     this Section 5 (including adjustment of the Conversion Price then in effect
     and the number of shares issuable




                                     Page 7


     upon conversion of the Series B Preferred Stock) shall be applicable after
     that event and be as nearly equivalent as practicable.

(h)  ADJUSTMENT THRESHOLD AND RECORDING. No adjustment in the Conversion Price
     need be made if such adjustment would result in a change in the Conversion
     Price of less than $0.01. Any adjustment of less than $0.01 which is not
     made shall be carried forward and shall be made at the time of and together
     with any subsequent adjustment which, on a cumulative basis, amounts to an
     adjustment of $0.01 or more in a Conversion Price. All calculations under
     this Section 5 shall be made to the nearest one hundredth of a cent
     ($0.0001) or to the nearest one hundredth (1/100) of a share, as the case
     may be.

(i)  OTHER DISTRIBUTIONS. In the event the Corporation shall declare a
     distribution payable in securities of other Persons, evidences of
     indebtedness issued by the Corporation or other Persons, or assets of the
     Corporation (excluding cash dividends), then in each such case for the
     purpose of this Section 5(i), the holders of the Series B Preferred Stock
     shall be entitled to a proportionate share of any such distribution as
     though they were the holders of the number of shares of Common Stock of the
     Corporation into which their shares of Series B Preferred Stock are
     convertible as of the record date fixed for the determination of the
     holders of Common Stock of the Corporation entitled to receive such
     distribution.

(j)  NO IMPAIRMENT. The Corporation will not, by amendment of this Certificate
     of Designations or through any reorganization, recapitalization, transfer
     of assets, consolidation, merger, dissolution, issue or sale of securities
     or any other voluntary action, avoid or seek to avoid the observance or
     performance of any of the terms to be observed or performed hereunder by
     the Corporation, but will at all times in good faith assist in the carrying
     out of all the provisions of this Section 5 and in the taking of all such
     action as may be necessary or appropriate in order to protect the
     conversion rights of the holders of Series B Preferred Stock against
     impairment.

(k)  NO FRACTIONAL SHARES. No fractional shares shall be issued upon the
     conversion of any share or shares of the Series B Preferred Stock, and the
     number of shares of Common Stock to be issued shall be rounded to the
     nearest whole share. Whether or not fractional shares are issuable upon
     such conversion shall be determined on the basis of the total number of
     shares of Series B Preferred Stock which the holder is at the time
     converting into Common Stock and the number of shares of Common Stock
     issuable upon such aggregate conversion.

(l)  CERTIFICATE AS TO ADJUSTMENTS. Upon the occurrence of each adjustment or
     readjustment of the Conversion Price, as the case may be, pursuant to this
     Section 5, the Corporation, at its expense, shall promptly compute such
     adjustment or readjustment in accordance with the terms hereof and prepare
     and furnish to each holder of such Series B Preferred Stock a certificate
     setting forth such adjustment or readjustment and showing in detail the
     facts upon which such adjustment or readjustment is based. The Corporation
     shall, upon the written request at any time of any holder of Series B
     Preferred Stock, furnish or cause to be furnished to such holder a
     certificate setting forth (A) such adjustment and readjustment, (B) the
     Series B Conversion Price, at the time in effect and (C) the number of
     shares of Common Stock and the amount of other property, if any, which at
     the time would be received upon the conversion of a share of Series B
     Preferred Stock.


                                     Page 8



(m)  NOTICES OF RECORD DATE. In the event of any taking by the Corporation of a
     record of the holders of any class of securities for the purpose of
     determining the holders thereof who are entitled to receive any dividend or
     other distribution, any right to subscribe for, purchase or otherwise
     acquire any shares of stock of any class or any other securities or
     property, or to receive any other right, the Corporation shall mail to each
     holder of Series B Preferred Stock, at least twenty (20) days prior to the
     date specified therein, a notice specifying the date on which any such
     record is to be taken for the purpose of such dividend, distribution or
     right, and the amount and character of such dividend, distribution or
     right.

(n)  RESERVATION OF STOCK ISSUABLE UPON CONVERSION. The Corporation shall at all
     times reserve and keep available out of its authorized but unissued shares
     of Common Stock, solely for the purpose of effecting the conversion of the
     shares of Series B Preferred Stock, such number of its shares of Common
     Stock as shall from time to time be sufficient to effect the conversion of
     all outstanding shares of Series B Preferred Stock.

(o)  NOTICES. Any notice, request, demand or other communication required or
     permitted to be given to a holder of Series B Preferred Stock pursuant to
     the provisions of this Section 5 will be in writing and will be effective
     and deemed given under this Section 5 on the earliest of: (a) the date of
     personal delivery, (b) the date of transmission by facsimile, with
     confirmed transmission and receipt, (c) two (2) days after deposit with a
     nationally-recognized courier or overnight service such as Federal Express,
     or (d) five (5) days after mailing via certified mail, return receipt
     requested. All notices not delivered personally or by facsimile will be
     sent with postage and other charges prepaid and properly addressed to the
     party to be notified at the address set forth in the Agreement for such
     party. Any holder of Series B Preferred Stock (and such holder's permitted
     assigns) may change such holder's address for receipt of future notices
     hereunder by giving written notice to the Corporation.

6.   VOTING RIGHTS. Except as otherwise provided herein or required by law, the
     Series B Preferred Stock shall be voted equally with the shares of the
     Common Stock of the Corporation and not as a separate class, and may act by
     written consent, with each holder of shares of Series B Preferred Stock
     entitled to the number of votes as shall be equal to the number of shares
     of Common Stock into which such holder's aggregate number of shares of
     Series B Preferred Stock are convertible pursuant to Section 5 immediately
     after the close of business on the record date for the determination of the
     stockholders entitled to vote on such matters or, if no such record date is
     established, at the date such vote is taken. Each holder of Series B
     Preferred Stock shall be entitled, notwithstanding any provision hereof, to
     notice of any stockholders' meeting in accordance with the Bylaws of the
     Corporation. Fractional votes shall not, however, be permitted and any
     fractional voting rights resulting from the above formula shall be rounded
     to the nearest whole number (with one-half (1/2) rounded upward to one
     (1)).

7.   PREEMPTIVE RIGHTS. The holders of the Series B Preferred Stock shall not
     have any preemptive right to subscribe for any additional shares of any
     class of stock of the Corporation, now or hereafter authorized, or for any
     issue of bonds, notes or other securities convertible into any class of
     stock of the Corporation.

8.   REPLACEMENT. Upon receipt of evidence reasonably satisfactory to the
     Corporation (an affidavit of the registered holder shall be satisfactory)
     of the ownership and the


                                    Page 9


     loss, theft, destruction or mutilation of any certificate evidencing Series
     B Preferred Stock, and in the case of any such loss, theft or destruction,
     upon receipt of indemnity reasonably satisfactory to the Corporation
     (PROVIDED, that if the holder is a financial institution or other
     institutional investor its own agreement shall be satisfactory), or, in the
     case of any such mutilation upon surrender of such certificate, the
     Corporation shall (at its expense) execute and deliver in lieu of such
     certificate a new certificate of like kind representing the number of
     shares of such class represented by such lost, stolen, destroyed or
     mutilated certificate and dated the date of such lost, stolen, destroyed or
     mutilated certificate, and dividends shall accrue on the Series B Preferred
     Stock represented by such new certificate from the date to which dividends
     have been fully paid on such lost, stolen, destroyed or mutilated
     certificate.

                                      ****

     The foregoing Certificate of Designations has been duly adopted by the
Corporation's Board of Directors in accordance with the applicable provisions of
Section 151 of the General Corporation Law of the State of Delaware.

                            [SIGNATURE PAGE FOLLOWS.]




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     IN WITNESS WHEREOF, the Corporation, by Brian K. Service, the Chief
Executive Officer of the Corporation, has caused this Certificate of
Designations to be effective as of the date first written above.



                                                   3D SYSTEMS CORPORATION



                                                  /S/ BRIAN K. SERVICE
                                                  ----------------------------
                                                  Name: Brian K. Service
                                                  Title: Chief Executive Officer


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