[LOGO]   SILICON VALLEY BANK 
        
      AMENDMENT TO LOAN DOCUMENTS

BORROWER:   3D Systems, Inc.
ADDRESS:    26081 Avenue Hall
            Valencia, California  91355

BORROWER:   3D Systems Inc. Limited
ADDRESS:    Unit 7, Progression Centre
            Mark Road, Hemel Hempstead
            Herts HP2 7DW
            ENGLAND

BORROWER:   3D Systems France SARL
ADDRESS:    Park Club Universite,
            rue Jean Rostand #26
            Bldg. R
            Orsay Cedex F-91893
            FRANCE

BORROWER:   3D Systems GmbH
ADDRESS:    Rontgenstrasse 41, Darmstadt-
            Arheilgen 63291
            GERMANY

DATE:       July 5, 1996  

     THIS AMENDMENT TO LOAN DOCUMENTS is entered into between SILICON VALLEY 
BANK ("Silicon") and the borrowers named above (jointly and severally, the 
"Borrower").

     The Parties agree to amend the Loan and Security Agreement between them, 
dated June 2, 1993, as amended by that Amendment to Loan Agreement dated 
August 3, 1994, and as amended by that Amendment to Loan Agreement dated July 
5, 1995, and as otherwise amended from time to time (as so amended, the "Loan 
Agreement"), as follows, effective as of the date hereof.  (Capitalized terms 
used but not defined in this Amendment, shall have the meanings set forth in 
the Loan Agreement.)

     1.  AMENDMENT TO SCHEDULE.  The Schedule to the Loan and Security 
Agreement is amended effective on the date hereof, to read as set forth on 
the Schedule hereto.

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              SILICON VALLEY BANK           AMENDMENT TO LOAN DOCUMENTS
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     2.  REPRESENTATIONS TRUE.  Borrower represents and warrants to Silicon 
that all representations and warranties set forth in the Loan Agreement, as 
amended hereby, are true and correct.  

     3.  GENERAL PROVISIONS.  This Amendment, the Loan Agreement, any prior 
written amendments to the Loan Agreement signed by Silicon and the Borrower, 
and the other written documents and agreements between Silicon and the 
Borrower set forth in full all of the representations and agreements of the 
parties with respect to the subject matter hereof and supersede all prior 
discussions, representations, agreements and understandings between the 
parties with respect to the subject hereof.  Except as herein expressly 
amended, all of the terms and provisions of the Loan Agreement, and all other 
documents and agreements between Silicon and the Borrower shall continue in 
full force and effect and the same are hereby ratified and confirmed.  

Borrower:                            Borrower:

                                                                        
3D SYSTEMS, INC.                     3D SYSTEMS INC. LIMITED
                                                                        
By /s/  [illegible]                 By /s/ [illegible]
   _______________________________     _______________________________  
   President                           Director                         
                                                                        
By /s/  [illegible]                 By 
   _______________________________     _______________________________  
   Secretary                           Secretary or Ass't Secretary     



Borrower:                            Borrower:

                                                                        
3D SYSTEMS FRANCE SARL               3D SYSTEMS GMBH
                                                                        
By /s/ [illegible]                  By /s/ [illegible]
   _______________________________     _______________________________  
   Director                            Managing Director
                                                                        
By                                   By
   _______________________________     _______________________________  
   Secretary or Ass't Secretary        Secretary or Ass't Secretary



                                     Silicon:

                                     SILICON VALLEY BANK



                                     By /s/ Doug Rosenthal
                                        _______________________________
                                     Title Vice President
                                          ____________________________

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              SILICON VALLEY BANK           AMENDMENT TO LOAN DOCUMENTS
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                              GUARANTORS' CONSENT


The undersigned, guarantors, acknowledge that their consent to the foregoing 
Amendment is not required, but the undersigned nevertheless do hereby consent 
to the foregoing Amendment and to the documents and agreements referred to 
therein and to all future modifications and amendments thereto, and to any 
and all other present and future documents and agreements between or among 
the foregoing parties.  Nothing herein shall in any way limit any of the 
terms or provisions of the Cross-Corporate Continuing Guaranty executed by 
the undersigned in favor of Silicon, which is hereby ratified and affirmed 
and shall continue in full force and effect.

3D SYSTEMS, INC.                          3D SYSTEMS FRANCE SARL

By:  /s/ [illegible]                     By: /s/ [illegible]
    ________________________________         _____________________________
Title: Vice-President, Finance            Title: Director
     _______________________________            __________________________


3D SYSTEMS INC. LIMITED                   3D SYSTEMS GMBH

By:  /s/ [illegible]                     By: /s/ [illegible]
    ________________________________         _____________________________
Title: Director                           Title: Managing Director
      _______________________________            __________________________


3D SYSTEMS CORPORATION                   3D SYSTEMS (CANADA) INC.

By:  /s/ [illegible]                     By: /s/ [illegible]
    ________________________________         _____________________________
Title: Vice President, Finance            Title: Secretary
      _______________________________            __________________________


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[LOGO]     SILICON VALLEY BANK

                         AMENDED SCHEDULE
                                TO 
                   LOAN AND SECURITY AGREEMENT

BORROWER:  3D Systems, Inc.
ADDRESS:   26081 Avenue Hall
           Valencia, California  91355

BORROWER:  3D Systems Inc. Limited
ADDRESS:   Unit 7, Progression Centre
           Mark Road, Hemel Hempstead
           Herts HP2 7DW  
           ENGLAND

BORROWER:  3D Systems France SARL
ADDRESS:   Park Club Universite,
           rue Jean Rostand  #26
           Bldg. R.
           Orsay Cedex F-91893
           FRANCE

BORROWER:  3D Systems GmbH
ADDRESS:   Rontgenstrasse 41, Darmstadt-
           Arheilgen 63291
           GERMANY

DATE:      July 5, 1996

CREDIT LIMIT 
(Section 1.1):      An amount not to exceed the sum of (a) and (b) below:
                      (a) $4,000,000 on a joint and aggregate basis for 3D 
                          Systems, Inc., 3D Systems Inc. Limited, 3D Systems
                          France SARL, and 3D Systems GmbH, at any one time 
                          outstanding; plus
                      (b) the amount of that certain standby letter of credit
                          number ____________ (the "IRB Letter of Credit") 
                          issued by Silicon in connection with those certain 
                          $4,900,000 Variable Rate Demand Industrial 
                          Development Revenue Bonds Series 1996 (3D Systems 
                          Corporation Project) (the "Industrial Revenue Bonds").
BORROWER LETTER
OF CREDIT SUBLIMIT  Silicon, in its reasonable discretion, will from time to 
                    time during the term of this Agreement issue letters of 
                    credit (in addition to the IRB

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                    SILICON VALLEY BANK                       AMENDED SCHEDULE
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                    Letter of Credit) for the account of the Borrower ("Letters
                    of Credit"), in an aggregate amount at any one time 
                    outstanding not to exceed $1,000,000*, upon the request of 
                    the Borrower, provided that, on the date the Letters of 
                    Credit are to be issued, Borrower has available to it 
                    Accounts Loans in an amount equal to or greater than the 
                    face amount of the Letters of Credit to be issued.  Prior 
                    to the issuance of any Letters of Credit, Borrower shall 
                    execute and deliver to Silicon Applications for Letters 
                    of Credit and such other documentation as Silicon shall 
                    specify (the "Letter of Credit Documentation").  Fees for
                    the Letters of Credit shall be as provided in the Letter 
                    of Credit Documentation. Letters of Credit may have a 
                    maturity date up to twelve months beyond the Maturity 
                    Date in effect from time to time, provided that if on 
                    the Maturity Date, or on any earlier effective date of 
                    termination, there are any outstanding letters of credit
                    issued by Silicon or issued by another institution based
                    upon an application, guarantee, indemnity or similar 
                    agreement on the part of Silicon, then on such date 
                    Borrower shall provide to Silicon cash collateral in an
                    amount equal to the face amount of all such letters of
                    credit plus all interest, fees and cost due or to become due
                    in connection therewith, to secure all of the Obligations
                    relating to said letters of credit, pursuant to Silicon's
                    then standard form cash pledge agreement.  

                    *ON A JOINT AND AGGREGATE BASIS FOR 3D SYSTEMS, INC., 3D
                    SYSTEMS INC. LIMITED, 3D SYSTEMS FRANCE SARL, AND 3D SYSTEMS
                    GMBH,

                    The Credit Limit set forth above and the Loans available
                    under this Agreement at any time shall be reduced by the 
                    face amount of Letters of Credit from time to time 
                    outstanding.
               
FOREIGN EXCHANGE 
CONTRACT SUBLIMIT   Up to $500,000* (the "Contract Limit") of the Credit Limit
                    may be utilized for spot and future foreign exchange
                    contracts (the "Exchange Contracts").  The Credit Limit
                    available at any time shall be reduced by the following
                    amounts (the "Foreign Exchange Reserve") on each day (the
                    "Determination Date"):  (i) on all outstanding Exchange
                    Contracts on which delivery is to be effected or settlement
                    allowed more than two business days from the Determination
                    Date, 20% of the gross amount of the Exchange Contracts;
                    plus (ii) on all outstanding Exchange Contracts on which
                    delivery is to be effected or settlement allowed within two
                    business days after the Determination Date, 100% of the
                    gross amount of the Exchange Contracts.  In lieu of the
                    Foreign Exchange Reserve for 100% of the gross amount of any
                    Exchange Contract, the Borrower may request that Silicon
                    debit the Borrower's bank account with Silicon for such
                    amount, provided Borrower has immediately available funds in
                    such amount in its bank account.

                    * ON A JOINT AND AGGREGATE BASIS FOR 3D SYSTEMS, INC., 3D 
                    SYSTEMS INC. LIMITED, 3D SYSTEMS FRANCE SARL, AND 3D SYSTEMS
                    GMBH

                    Silicon may, in its discretion, terminate the Exchange 
                    Contracts at any time (a) that an Event of Default occurs 
                    or (b) that there is not sufficient availability under the
                    Credit Limit and Borrower does not have available funds in 
                    its bank account to satisfy the Foreign Exchange Reserve.
                    If either Silicon or Borrower terminates the Exchange 
                    Contracts, and without limitation of the FX Indemnity 
                    Provisions (as referred to below), Borrower agrees to 
                    reimburse

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                    SILICON VALLEY BANK                       AMENDED SCHEDULE
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                    Silicon for any and all fees, costs and expenses
                    relating thereto or arising in connection therewith.  
                    Borrower shall not permit the total gross amount of all
                    Exchange Contracts on which delivery is to be effected and 
                    settlement allowed in any two business day period to be more
                    than $250,000* (the "Settlement Limit"), nor shall Borrower 
                    permit the total gross amount of all Exchange Contracts to 
                    which Borrower is a party, outstanding at any one time, to 
                    exceed the Contract Limit.

                    * ON A JOINT AND AGGREGATE BASIS FOR 3D SYSTEMS, INC., 3D 
                    SYSTEMS INC. LIMITED, 3D SYSTEMS FRANCE SARL, AND 3D SYSTEMS
                    GMBH

                    Notwithstanding the above, however, the amount which may be
                    settled in any two (2) business day period may, in Silicon's
                    sole discretion, be increased above the Settlement Limit up 
                    to, but in no event to exceed, the amount of the Contract 
                    Limit (the "Discretionary Settlement Amount") under either 
                    of the following circumstances (the "Discretionary 
                    Settlement Circumstances"):  

                       (i) if there is sufficient availability under the Credit
                       Limit in the amount of the Foreign Exchange Reserve as of
                       each Determination Date, provided that Silicon in advance
                       shall reserve the full amount of the Foreign Exchange 
                       Reserve against the Credit Limit; or 

                       (ii) if there is insufficient availability under the 
                       Credit Limit as to settlements within any two (2) 
                       business day period if Silicon is able to: (A) verify 
                       good funds overseas prior to crediting Borrower's
                       deposit account with Silicon (in the case of Borrower's
                       sale of foreign currency); or (B) debit Borrower's 
                       deposit account with Silicon prior to delivering 
                       foreign currency overseas (in the case of Borrower's 
                       purchase of foreign currency);

                    PROVIDED that it is expressly understood that Silicon's
                    willingness adopt the Discretionary Settlement Amount is
                    a matter of Silicon's sole discretion and the existence 
                    of the Discretionary Settlement Circumstances in no way 
                    means or implies that Silicon shall be obligated to 
                    permit the Borrower to exceed the Settlement Limit in
                    any two business day period. 

                    In the case of Borrower's purchase of foreign currency,
                    Borrower in advance shall instruct Silicon upon 
                    settlement either to treat the settlement amount as an
                    advance under the Credit Limit, or to debit Borrower's
                    account for the amount settled.

                    The Borrower shall execute all standard form applications
                    and agreements of Silicon in connection with the Exchange
                    Contracts, and without limiting any of the terms of such
                    applications and agreements, the Borrower will pay all 
                    standard fees and charges of Silicon in connection with 
                    the Exchange Contracts.

                    Without limiting any of the other terms of this Loan 
                    Agreement or any such standard form applications and 
                    agreements of Silicon, Borrower agrees to indemnify 
                    Silicon and hold it harmless, from and against any 
                    and all claims, debts, liabilities, demands, obligations,
                    actions, costs

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                    SILICON VALLEY BANK                       AMENDED SCHEDULE
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                    and expenses (including, without limitation, attorneys'
                    fees of counsel of  Silicon's choice), of every nature 
                    and description, which it may sustain or incur, based 
                    upon, arising out of, or in any way relating to any of 
                    the Exchange Contracts or any transactions relating 
                    thereto or contemplated thereby (collectively referred 
                    to as the "FX Indemnity Provisions").  
               
                    The Exchange Contracts shall have maturity dates no later
                    than the Maturity Date.

INTEREST RATE 
(Section 1.2):      A rate equal to the "Prime Rate" in effect from time to 
                    time (except that the interest rate on any obligations 
                    outstanding under the IRB Letter of Credit shall be as 
                    set forth therein).  Interest shall be calculated on the
                    basis of a 360-day year for the actual number of days 
                    elapsed.  "Prime Rate" means the rate announced from time
                    to time by Silicon as its "prime rate;" it is a base rate
                    upon which other rates charged by Silicon are based, and 
                    it is not necessarily the best rate available at Silicon.
                    The interest rate applicable to the Obligations shall 
                    change on each date there is a change in the Prime Rate.
LOAN ORIGINATION FEE
(Section 1.3):      NOT APPLICABLE.

MATURITY DATE 
(Section 5.1):      JULY 5, 1997 (except that the Maturity Date of the IRB
                    Letter of Credit shall be as set forth therein).

PRIOR NAMES OF 
BORROWER 
(Section 3.2):      NONE

TRADE NAMES OF 
BORROWER  
(Section 3.2):      NONE

OTHER LOCATIONS AND
ADDRESSES 
(Section 3.3):      FOR 3D SYSTEMS, INC.

                    6230 N. BELTLINE RD., SUITE 300, IRVING, TX  75063
          
                    27280 HAGGERTY ROAD, TECHNOLOGY PARK, SUITE C-7,
                    FARMINGTON HILLS, MICHIGAN 48331

                    PLYMOUTH CROSSING, 4110 BUTLER PIKE, SUITE A102, 
                    PLYMOUTH MEETING, PA  19462

                    1350 REMINGTON RD., SUITE K, SCHAUMBURG, IL  60173

                    805 FALCON WAY, GRAND JUNCTION, CO 81506

MATERIAL ADVERSE 
LITIGATION 
(Section 3.10):     NONE

NEGATIVE COVENANTS-
EXCEPTIONS 
(Section 4.6):      Without Silicon's prior written consent, Borrower
                    may do the following, provided that, after giving
                    effect thereto, no Event of Default has occurred
                    and no event has occurred which, with notice or
                    passage of time or both, would constitute an Event
                    of Default, and provided that the following are
                    done in compliance with all applicable laws, rules
                    and regulations:  (i) pay or lend to the Parent
                    Company whether by dividend, advance or otherwise,
                    such amounts to enable the Parent Company to pay
                    when due all federal, state, and local taxes;
                    reasonable operating expenses; and legal,
                    accounting and filing fees;

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                    SILICON VALLEY BANK                       AMENDED SCHEDULE
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                         in each of the foregoing cases, however, payments 
                         shall only be made in such amounts as are attributable
                         to the ownership of Borrower (collectively referred to
                         as the "Upstream Payments"), including, without
                         limitation, directors' fees, legal and accounting
                         expenses and filing fees attributable to the
                         ownership of Borrower, PROVIDED, HOWEVER, Borrower
                         may pay or lend to the Parent Company funds not to
                         exceed $5,000,000 to allow the Parent Company to
                         repurchase shares of Parent Company's stock; and
                         (ii) make scheduled payments of principal and
                         interest on Silicon approved subordinated
                         indebtedness owing to the Borrower's shareholders
                         and related parties.  

FINANCIAL COVENANTS 
(Section 4.1):           Borrower shall cause Parent Company to comply with
                         all of the following covenants on a consolidated
                         basis.  Compliance shall be determined as of the
                         end of each quarter, except as otherwise
                         specifically provided below: 

  QUICK ASSET RATIO:     Parent Company shall maintain a ratio of "Quick 
                         Assets" to current liabilities of not less than 2.50
                         to 1.

  TANGIBLE NET WORTH:    Parent Company shall maintain a tangible net worth 
                         of not less than $52,000,000.  
 
  DEBT TO TANGIBLE 
  NET WORTH RATIO:       Parent Company shall maintain a ratio of total 
                         liabilities to tangible net worth of not more than
                         0.75 to 1.

  DEFINITIONS:           "Current liabilities" shall have the meaning ascribed
                         thereto in accordance with generally accepted 
                         accounting principles, except that "current 
                         liabilities":
                           (i)  shall include the IRB Letter of Credit;
                           (ii) shall not include any current portion of the
                                indebtedness represented by the Industrial 
                                Revenue Bonds.

                         "Tangible net worth" means the excess of total
                         assets over total liabilities, determined in
                         accordance with generally accepted accounting
                         principles, excluding however all assets which
                         would be classified as intangible assets under
                         generally accepted accounting principles,
                         including without limitation goodwill, licenses,
                         patents, trademarks, trade names, copyrights, and
                         franchises.  

                         "Quick Assets" means cash on hand or on deposit in
                         banks, readily marketable securities issued by the
                         United States, readily marketable commercial paper
                         rated "A-1" by Standard & Poor's Corporation (or a
                         similar rating by a similar rating organization),
                         certificates of deposit and banker's acceptances,
                         and accounts receivable (net of allowance for
                         doubtful accounts).
               
  DEFERRED REVENUES:     For purposes of the above quick asset ratio, deferred
                         revenues shall not be counted as current liabilities.
                         For purposes of the above debt to tangible net worth
                         ratio, deferred revenues shall not be counted in 
                         determining total liabilities and shall not be
                         counted in determining tangible net worth for purposes
                         of such ratio.  For all other purposes deferred
                         revenues shall be counted as liabilities in accordance
                         with generally accepted accounting principles.

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                    SILICON VALLEY BANK                       AMENDED SCHEDULE
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  SUBORDINATED DEBT:     "Liabilities" for purposes of the foregoing covenants 
                         do not include indebtedness which is subordinated
                         to the indebtedness to Silicon under a subordination 
                         agreement in form specified by Silicon or by language
                         in the instrument evidencing the indebtedness which
                         is acceptable to Silicon.

OTHER COVENANTS 
(Section 4.1):           Borrower shall at all times comply with all of the
                         following additional covenants:

                         1.   BANKING RELATIONSHIP.  Borrower shall at all times
                         maintain its primary banking relationship with Silicon.

                         2.   INDEBTEDNESS.  Without limiting any of the 
                         foregoing terms or provisions of this Agreement, 
                         Borrower shall not in the future incur indebtedness for
                         borrowed money, except for indebtedness to Silicon, and
                         Borrower shall cause Parent Company, on a consolidated
                         basis, not to incur indebtedness in the future except 
                         for indebtedness in connection with: (i) the purchase 
                         or lease of equipment, which shall not exceed 
                         $2,500,000 in the aggregate at any time outstanding; or
                         (ii) the Industrial Revenue Bonds.

                         3.   UVP INTERCREDITOR.  The Borrower shall cause UVP, 
                         Inc. to maintain in effect the intercreditor agreement 
                         with Silicon.

                         4.   CROSS CORPORATE GUARANTY.  Each Borrower shall 
                         maintain in effect, and Borrower shall cause Parent 
                         Company to maintain in effect, the respective Cross 
                         Corporate Continuing Guaranty that each delivered to 
                         Silicon in connection with the original Loan Agreement.

                         5.   NEGATIVE PLEDGE.  Borrower shall not grant a 
                         security interest in any of its Collateral, whether 
                         presently owned or hereafter acquired, PROVIDED, 
                         HOWEVER, Borrower may incur liens on capital equipment
                         relating to indebtedness incurred pursuant to Paragraph
                         2 set forth above entitled "Indebtedness".

                         6.   ADDITIONAL EVENTS OF DEFAULT; UVP LETTER, MATERIAL
                         ADVERSE CHANGE.  Without limiting the Events of Default
                         as set forth in the Loan Agreement, each of the
                         following shall constitute an Event of Default: (a) a
                         default or event of default under the Letter Agreement
                         dated January 5, 1990 between Borrower and UVP, Inc. or
                         under the Security Agreement dated January 5, 1990
                         between Borrower and UVP, Inc.; and (b) a material
                         adverse change in the business, assets or prospects of
                         Borrower or any guarantor after the date hereof. 

                         7.   NORWEST BANK INTERCREDITOR.  The Borrower shall 
                         cause Norwest Bank Colorado, National Association, a 
                         national banking association ("Norwest"), to execute 
                         and maintain in effect for so long as the IRB Letter of
                         Credit is outstanding an intercreditor agreement with
                         Silicon in form and substance acceptable to Silicon in
                        its discretion.

                         8.   ADDITIONAL EVENT OF DEFAULT: REIMBURSEMENT 
                         AGREEMENT BY PARENT.  Without limiting the Events of 
                         Default as set forth in the Loan Agreement, any default
                         or event of default under that certain Reimbursement 
                         Agreement dated as of August 1, 1996, by and between 
                         the Parent Company and Norwest, shall constitute an 
                         Event of Default.

                         9.   CASH COLLATERALIZATION OF IRB LETTER OF CREDIT. 
                         Notwithstanding any other term of this Agreement, if
                         upon (a) the Maturity Date, or (b) the date of any
                         earlier termination of this Agreement, or (c) the date
                         of occurrence of any Event of Default, the 

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                    SILICON VALLEY BANK                       AMENDED SCHEDULE
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                         IRB Letter of Credit is outstanding, then on such date
                         Borrower shall provide to Silicon cash collateral in an
                         amount equal to 105% of the face amount of the IRB 
                         Letter of Credit plus all interest, fees and costs due
                         or to become due in connection therewith, to secure all
                         of the Obligations relating to the IRB Letter of 
                         Credit, pursuant to Silicon's then standard form cash 
                         pledge agreement.

Borrower:                            Borrower:


3D SYSTEMS, INC.                    3D SYSTEMS INC. LIMITED

By /s/ Charles Hull                  By /s/ Gordon Almquist
   _______________________________     _______________________________
   President                           Director

By /s/ Gordon Almquist              By 
   _______________________________     _______________________________
   Secretary                           Secretary or Ass't Secretary



Borrower:                           Borrower:


3D SYSTEMS FRANCE SARL              3D SYSTEMS GMBH

By /s/ Gordon Almquist              By /s/ Gordon Almquist
   _______________________________     _______________________________  
   Director                            Managing Director

By                                  By
   _______________________________     _______________________________  
   Secretary or Ass't Secretary        Secretary or Ass't Secretary



                                    Silicon:

                                    SILICON VALLEY BANK



                                    By /s/ Doug Rosenthal
                                       ______________________________
                                    Title Vice President
                                          ___________________________

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