Document:

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                                                                    EXHIBIT 10.1

                             EMPLOYMENT AGREEMENT

          EMPLOYMENT AGREEMENT, by and between WORLDQUEST NETWORKS, INC.
("WorldQuest") and R. Stephen Polley ("Executive"), effective as of May 14,
2001.

                                  WITNESSETH:

          WHEREAS, WorldQuest desires to secure the services of the Executive as
its President and Chief Executive Officer, and the Executive is willing to
render such services; and

          WHEREAS, WorldQuest and the Executive desire to evidence in this
Employment Agreement the terms under which the Executive will perform such
services;

          NOW THEREFORE, in consideration of the premises and other good and
valuable consideration, receipt of which is hereby acknowledged, the Executive
and WorldQuest agree as follows:

     1.   Title and Duties

          (a)  The Executive's title will be President and Chief Executive
     Officer of WorldQuest. The Executive's duties and responsibilities will be
     as described in WorldQuest's Bylaws (in effect as of the date of the
     Employment Agreement) and the Executive shall at all times report directly
     to the Board of Directors of WorldQuest, or as otherwise agreed by the
     Executive. Nothing in this Employment Agreement shall limit or restrict the
     Executive from performing services as an employee or private contractor for
     Trinity e-Ventures, and the Executive may serve as Chairman of the internet
     businesses of Trinity e-Ventures. The Executive will exercise due diligence
     and reasonable care in the performance of the Executive's duties under this
     Employment Agreement.

          (b)  The Executive shall become a member of the Board of Directors of
     WorldQuest on May 21, 2001, and shall be nominated for continued membership
     on the Board during the Term of this Employment Agreement.

     2.   Term

          (a)  Unless earlier terminated as provided for herein, the term of
     this Employment Agreement will be for two years, beginning on May 14, 2001,
     and ending on May 13, 2003 (the "Term").

          (b)  If the Executive's employment with WorldQuest is terminated by
     the Executive due to the Executive's voluntary resignation (other than
     voluntary resignation following "Constructive Termination", as defined
     below) or by WorldQuest for "Cause" (as defined below), this Employment
     Agreement shall terminate immediately (except for the confidentiality
     provisions of Paragraph 4 and the provisions of Paragraphs 5, 6 and 7). For
     purposes of this Employment Agreement, the Executive may be terminated for
     "Cause" by majority vote of (excluding the Executive) the Board of
     Directors of WorldQuest as a result of (i) refusal to implement or adhere
     to policies or directives of the Board of Directors of WorldQuest; or (ii)
     gross negligence that is materially injurious to the operations or
     financial condition of WorldQuest; and such conduct or condition causing
     termination for Cause is not cured within thirty days after written notice
     is delivered to the Executive from WorldQuest. For these purposes, no
     refusal to act or failure to adhere shall be considered as grounds for
     Cause unless it is done, or omitted to be done, in bad faith without
     reasonable belief that the action or omission

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     was in the best interest of WorldQuest. In the event corrective action is
     not satisfactorily taken by the Executive, a final written notice of
     termination shall be provided to the Executive by WorldQuest.

          (c)  If the Executive's employment is terminated during the Term of
     this Employment Agreement due to resignation following "Constructive
     Termination" (as defined below) or for any other reason other than the
     Executive's voluntary resignation, or discharge for Cause, this Employment
     Agreement shall terminate immediately (except for the confidentiality
     provisions of Paragraph 4 and the provisions of Paragraphs 5, 6 and 7) and
     the Executive shall receive:

               (i)    The Executive's Base Salary as described in Paragraph 3(a)
          through the date of termination;

               (ii)   in lieu of further cash payments to the Executive pursuant
          to Paragraph 3, WorldQuest shall pay the Executive within thirty days
          of the date of the Executive termination, a lump sum amount equal to
          the Executive's annual Base Salary;

               (iii)  full vesting in all stock options previously granted to
          the Executive (irrespective of the date of the grant of such stock
          options and irrespective of the vesting schedule otherwise applicable
          to such stock options; the Executive shall be permitted to retain such
          options for future exercise or sell such stock received on exercise as
          though the Executive had remained in the employment of WorldQuest
          until the end of the regular Term, and WorldQuest shall take such
          actions as are permitted by applicable law to cause such vesting and
          option retention; and

               (iv)   additionally, the provisions of Paragraphs 7(g) and 7(h)
          shall remain in effect as though this Employment Agreement expired at
          the end of its regular Term described in Paragraph 2(a), irrespective
          of its earlier termination.

          For purposes of this Employment Agreement a "Constructive Termination"
     shall be deemed to have occurred in the event that (i) the Executive's Base
     Salary as defined in Paragraph 3(a), bonus compensation under Paragraph
     3(b), option grants under Paragraph 3(d) or other compensation as described
     in Paragraphs 3(e) and 3(f) is reduced; (ii) a significant diminution in
     the Executive's responsibilities, authority or scope of duties is effected
     by the Board of Directors and such diminution is made without the
     Executive's written consent (without regard to whether or not any change is
     made to the Executive's title); (iii) WorldQuest materially breaches this
     Employment Agreement or (iv) a Change in Control of WorldQuest occurs.  For
     purposes of this Employment Agreement, a "Change in Control of WorldQuest"
     means the occurrence of any of the following events after the date hereof:
     (a) any "person" or "group" (as such terms are used in Sections 13(d) and
     14(d) of the Securities Exchange Act of 1934, as amended (the "Exchange
     Act")) is or becomes the "beneficial owner" (as defined in Rule l3d-3 under
     the Exchange Act), directly or indirectly, of more than 20% of the total
     voting stock of WorldQuest; (b) WorldQuest is merged with or into or
     consolidated with another person and, immediately after giving effect to
     the merger or consolidation, (A) less than 80% of the total voting power of
     the outstanding voting stock of the surviving or resulting person is then
     "beneficially owned" (within the meaning of Rule l3d-3 under the Exchange
     Act) in the aggregate by (x) the stockholders of WorldQuest immediately
     prior to such merger or consolidation, or (y) if a record date has been set
     to determine the stockholders of WorldQuest entitled to vote with respect
     to such merger or consolidation, the stockholders of WorldQuest as of such
     record date and (B) any "person" or "group" (as defined in Section 13(d)(3)
     or 14(d)(2) of the Exchange Act) has become the direct or indirect
     "beneficial owner" (as defined in Rule l3d-3 under the Exchange Act) of
     more than 20%

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     of the voting power of the voting stock of the surviving or resulting
     person; (c) WorldQuest, either individually or in conjunction with one or
     more of its subsidiaries, sells, assigns, conveys, transfers, leases or
     otherwise disposes of, or the subsidiaries sell, assign, convey, transfer,
     lease or otherwise dispose of, all or substantially all of the properties
     and assets of WorldQuest and the subsidiaries, taken as a whole (either in
     one transaction or a series of related transactions), to any person (other
     than WorldQuest or a wholly owned subsidiary); or (d) the liquidation or
     dissolution of WorldQuest. Any resignation by the Executive as a result of
     assertion of a Constructive Termination shall be communicated by delivery
     to the Board of Directors of WorldQuest of thirty days' advance written
     notice of such Constructive Termination and the grounds therefor, during
     which period WorldQuest shall be entitled to cure or remedy the matters set
     forth in such notice to the Executive's reasonable satisfaction. Unless the
     Executive shall withdraw such notice prior to the expiration of such thirty
     day period, such resignation shall take effect upon the expiration of
     thirty days from the date of the delivery of such notice. Any other
     resignation by the Executive shall be communicated by thirty days' advance
     written notice.

          (d)  If the Executive shall die, or become disabled and cannot perform
     the Executive's duties, this Employment Agreement shall terminate
     immediately.  For purposes of this Employment Agreement, the Executive
     shall be disabled as of the first date on which the Executive shall become
     eligible to receive disability benefits under WorldQuest's long-term
     disability plan (or Social Security disability benefits at a time when
     WorldQuest does not maintain a long-term disability plan or such plan is
     not available to the Executive).  WorldQuest will maintain for a period of
     twenty-four months from the date of the Executive's death or disability,
     all Directors and Officers Liability Insurance that WorldQuest was
     maintaining for the Executive and/or the Executive's estate as of the date
     of the Executive's death or disability.

3.   Compensation

          (a)  Each year during the Term hereof, the Executive will be paid a
     base salary of $300,000 per annum ("Base Salary"), payable in accordance
     with WorldQuest's payroll guidelines, subject to applicable tax and benefit
     plan withholding.  Increases may be made to the Executive's Base Salary at
     the discretion of the Board of Directors, based upon the Executive's
     individual performance.

          (b)  The Executive shall be a participant in any incentive
     compensation plan sponsored by WorldQuest, at the highest level of
     executive participation. Upon execution of this Employment Agreement by the
     parties hereto, WorldQuest shall pay the Executive a $150,000 signing
     bonus, subject to applicable withholding. The $150,000 payment, less
     applicable tax withholding, constitutes an irrevocable and non-refundable
     signing bonus. This signing bonus amount may not be offset against any
     amount owing the Executive under the Employment Agreement, or otherwise. In
     addition, upon approval of a new business plan by the Board of Directors of
     WorldQuest, the Executive shall be paid an additional $125,000 by
     WorldQuest on January 2, 2002, subject to applicable tax withholding, as an
     irrevocable and non-refundable bonus.

          (c)  The Executive shall be designated as a participant in the 2001
     Stock Option Plan of WorldQuest Networks, Inc. (the "Option Plan"), and any
     other option or stock-based compensation plans established by WorldQuest,
     and shall be entitled to purchase shares of common stock of WorldQuest
     provided thereunder.  As of May 14, 2001, the Executive shall be granted an
     option (the "Initial Option") under the Option Plan.  The Initial Option
     shall grant the Executive the option to acquire 300,000 shares of stock of
     WorldQuest at the per share exercise price equal to the per share closing
     price of WorldQuest's stock on the NASDAQ system (or other

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     applicable system) on May 14, 2001. Such Initial Option shall have a term
     of at least 10 years from date of grant, and may be exercised at any time
     after a Constructive Termination, as described in Paragraph 2(c). The
     Executive shall be entitled to exercise immediately following grant up to
     one-half of the shares covered by the Initial Option (and thereafter until
     expiration), and the remaining shares covered by the Initial Option shall
     become exercisable after one year from date of approval of the new business
     plan. In the event the Executive voluntarily resigns (other than voluntary
     resignation following a Constructive Termination) within one year after May
     14, 2001, the Initial Option shall terminate. Upon the date on which the
     Board of Directors of WorldQuest shall approve a new business plan, the
     Executive shall be granted an additional stock option (the "Additional
     Option") for 125,000 shares of WorldQuest, at a per share exercise price
     equal to the closing price of a share of WorldQuest's stock on the NASDAQ
     system (or other system on which such stock is traded) on the date of
     approval of the new business plan. The Additional Option shall be fully
     vested and exercisable on and after May 13, 2003, and shall have a term of
     at least 10 years from date of grant, with twenty-four months after any
     separation of employment available for exercise.

          (d)  The Executive shall be entitled to participate in any
     WorldQuest's benefit programs for senior management executives. The
     Executive shall participate in, and be eligible to receive benefits under,
     any "employee welfare benefit plans" and "employee pension benefit plans"
     (as such terms are defined in the Employee Retirement Income Security Act
     of 1974, as amended) and business travel insurance plans and programs as
     shall apply to general and/or executive employees of WorldQuest.

          (e)  During the Term of this Employment Agreement, or until
     termination of this Employment Agreement if this Employment Agreement
     terminates prior to expiration of the regular Term (except as provided in
     Paragraph 2(b)), WorldQuest will pay all premiums on a policy of insurance
     providing term protection only and no cash values, with a death benefit
     payable upon the Executive's death in the amount of $5,000,000. The
     Executive shall at all times own the policy and have the right to designate
     the beneficiary of any death proceeds. The Executive will be responsible
     for policy selection, coverage and effectiveness of the policy and any
     income taxes arising in connection therewith, WorldQuest's only obligation
     being to pay such premiums.

          (f)  The Executive shall be entitled to participate in such other
     compensation arrangements and receive such other perquisites as the Board
     of Directors of WorldQuest in its sole discretion determines, provided that
     WorldQuest shall pay or reimburse the Executive for all reasonable
     business, travel or entertainment expenses incurred in connection with the
     performance of services under this Employment Agreement. WorldQuest shall
     furnish the Executive with an office commensurate with the Executive's
     title and adequate for the performance of the Executive's duties, and with
     secretarial assistance and similar services.

     4.   Confidentiality

The Executive recognizes and acknowledges that the Executive will have access to
certain information concerning WorldQuest that is confidential and proprietary
and constitutes valuable and unique property of WorldQuest.  The Executive
agrees that the Executive will not at any time, either during or after the
Executive's employment, disclose to others, use, copy or permit to be copied,
except pursuant to the Executive's duties on behalf of WorldQuest or its
successors, assigns or nominees, any secret or confidential information of
WorldQuest (whether or not developed by the Executive) without the prior written
consent of the Board of Directors of WorldQuest.

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     5.   Indemnification

          If, at any time during or after the Term of this Employment Agreement,
the Executive is made a party to, or is threatened to be made a party in, any
civil, criminal or administrative action, suit or proceeding by reason of the
fact that the Executive is or was a director, officer, employee, or agent of
WorldQuest, or of any other corporation or any partnership, joint venture, trust
or other enterprise for which the Executive served as such at the request of
WorldQuest, then the Executive shall be indemnified by WorldQuest against
expenses actually and reasonably incurred by the Executive or imposed on the
Executive in connection with, or resulting from, the defense of such action,
suit or proceeding, or in connection with, or resulting from, any appeal therein
if the Executive acted in good faith and in a manner the Executive reasonably
believed to be in or not opposed to the best interest of WorldQuest, and, with
respect to any criminal action or proceeding, had no reasonable cause to believe
the Executive's conduct was unlawful, except with respect to matters as to which
it is adjudged that the Executive is liable to WorldQuest or to such other
corporation, partnership, joint venture, trust or other enterprise for gross
negligence or willful misconduct in the performance of the Executive's duties.
As used herein, the term "expenses" shall include all obligations actually and
reasonably incurred by the Executive for the payment of money, including,
without limitation, attorney's fees, judgments, awards, fines, penalties and
amounts paid in satisfaction of a judgment or in settlement of any such action,
suit or proceeding, except amounts paid to WorldQuest or such other corporation,
partnership, joint venture, trust or other enterprise by the Executive.

     6.   Arbitration

Any controversy or claim arising out of or relating to this Employment
Agreement, or any breach thereof, shall be adjudged only by arbitration in
accordance with the rules of the American Arbitration Association, and judgment
upon such award rendered by the arbitrator may be entered in any court having
jurisdiction thereof.  The arbitration shall be held in the City of Dallas,
Texas, or such other place as may be agreed upon at the time by the parties to
the arbitration.  The arbitrator(s) shall, in their award, allocate between the
parties the costs of arbitration, which shall include reasonable attorneys' fees
of the parties, as well as the arbitrators' fees and expenses, in such
proportions as the arbitrator(s) deem just.

     7.   Other Provisions

          (a) This Employment Agreement will be governed by, construed and
     enforced in accordance with the laws of the State of Texas, excluding any
     conflicts of law, rule or principle that might otherwise refer to the
     substantive law of another jurisdiction.

          (b) Except as otherwise indicated, this Employment Agreement is not
     assignable without the written authorization of both parties; provided that
     WorldQuest may assign this Employment Agreement to any entity to which
     WorldQuest transfers substantially all of its assets or to any entity which
     is a successor to WorldQuest by reorganization, incorporation, merger or
     similar business combination.  In the event of any such transfer or
     assignment by WorldQuest, the rights and privileges of the Board hereunder
     shall be vested in the Board of Directors or other governing body of the
     transferee or successor entity.  However, notwithstanding anything to the
     contrary contained herein, this Employment Agreement will be binding upon
     any successor (whether direct or indirect, by purchase, merger,
     consolidation or otherwise) to all or substantially all of the business
     and/or assets of WorldQuest, and WorldQuest will require any such successor
     by agreement, in form and substance satisfactory to the Executive, to
     expressly assume and agree to perform this Employment Agreement in the same
     manner and to the same extent that WorldQuest would be required to perform
     if no such succession had taken place.  In addition to the Executive's
     rights above, if a Change in Control of WorldQuest occurs as described in

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     Paragraph 2(c) above, the failure of WorldQuest to obtain such agreement
     prior to the effectiveness of any such succession shall be a breach of this
     Employment Agreement and shall entitle the Executive to compensation from
     WorldQuest in the same amount and on the same terms as the Executive would
     be entitled to hereunder if the Executive resigned from the Executive's
     employment due to a Constructive Termination, as described in Paragraph
     2(c) above, except that for purposes of implementing the foregoing, the
     date on which any such succession becomes effective shall be deemed the
     date of termination.  As used in this Employment Agreement, "WorldQuest"
     shall mean WorldQuest as hereinbefore defined and any successor to its
     business and/or assets as aforesaid which executes and delivers the
     agreement provided for in this Paragraph 7(b) or which otherwise becomes
     bound by all the terms and provisions of this Employment Agreement by
     operation of law.  This Employment Agreement and all rights of the parties
     hereto shall inure to the benefit of and be enforceable by the parties
     hereto, their assigns, personal or legal representatives, executors,
     administrators, successors, heirs, distributees, devises and legatees.

          (c)  Except as otherwise provided herein, the provisions of Paragraphs
     4, 5 and 6 of this Employment Agreement shall survive the termination of
     this Employment Agreement.

          (d)  This Employment Agreement supersedes all previous employment
     agreements, written or oral, between WorldQuest and the Executive. This
     Employment Agreement may be amended only by written amendment duly executed
     by both parties hereto or their legal representatives and authorized by
     action of the Board. Except as otherwise specifically provided in this
     Employment Agreement, no waiver by either party hereto of any breach by the
     other party hereto of any condition or provision of this Employment
     Agreement to be performed by such other party shall be deemed a waiver of a
     subsequent breach of such condition or provision or a waiver of a similar
     or dissimilar provision or condition at the same or at any prior or
     subsequent time.

          (e)  Any notice or other communication required or permitted pursuant
     to the terms of this Employment Agreement shall be in writing and shall be
     deemed to have been duly given when delivered or mailed by United States
     mail, first class, postage prepaid and registered with return receipt
     requested, addressed to the intended recipient at his or its address set
     forth below and, in the case of a notice or other communication to
     WorldQuest, directed to the attention of the Board of Directors with a copy
     to the Secretary of WorldQuest, or to such other address as the intended
     recipient may have theretofore furnished to the sender in writing in
     accordance herewith, except that until any notice of change of address is
     received, notices shall be sent to the following addresses:

          If to the Executive:          If to WorldQuest

          R. Stephen Polley             WorldQuest Networks, Inc.
          1623 Main Street              Attn:  Chairman of the Board
          Suite 1202                    16990 Dallas Parkway, Suite 220
          Dallas, Texas  75201          Dallas, Texas  75248

          (f)  If any one or more of the provisions or parts of a provision
     contained in this Employment Agreement shall for any reason be held to be
     invalid, illegal or unenforceable in any respect, such invalidity or
     unenforceability shall not affect any other provision or part of a
     provision of this Employment Agreement, but this Employment Agreement shall
     be reformed and construed as if such invalid or illegal or unenforceable
     provision or part of a provision had never

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     been contained herein and such provisions or part thereof shall be reformed
     so that it would be valid, legal and enforceable to the maximum extent
     permitted by law.

          (g)  The Executive shall not be required to mitigate damages (or the
     amount of any compensation provided under this Employment Agreement to be
     paid) following the Executive's termination of employment, by seeking
     employment or otherwise.

          (h)  In the event that any Incentive Compensation Plan or the Option
     Plan are amended to reduce, modify limit or restrict any of the Executive's
     accrued or vested rights thereunder, no such amendment shall apply to the
     Executive without the Executive's written consent.

          (i)  WorldQuest shall maintain during the Term of this Employment
     Agreement and for a period of twenty-four months thereafter Directors and
     Officers Liability Insurance covering the Executive (or the Executive's
     estate, if the Executive is deceased or incompetent), which provides
     coverage at least as favorable to the Executive (or the Executive's estate,
     if the Executive is deceased or incompetent), as coverage under
     WorldQuest's policy in effect on the date of execution of this Employment
     Agreement, and which coverage shall be increased from time to time in such
     amounts as the Board may determine to be appropriate in light of
     WorldQuest's operations.

          (j)  WorldQuest will not amend the provisions of its governing
     documents which pertain to the Executive's indemnification in the
     Executive's capacity as an officer and/or member of the Board of WorldQuest
     except to substitute therefor provisions which are more favorable to the
     Executive, except as otherwise required by law or the rules of any
     securities exchange or similar entity, or by applicable law.

                                             WorldQuest Networks, Inc.

                                             By:_______________________________
                                                B. Michael Adler

                                                Its:  Chairman of the Board
                                                      & Chief Executive Officer

AGREED AND ACCEPTED this
___ day of ________, 2001
and effective as of May 14, 2001.

________________________________
R. Stephen Polley

                                       7<PAGE>

                                                                    EXHIBIT 10.1

Silicon Valley Bank

Amendment to Loan Agreements

Borrower:     DTM Corporation
Address:      1611 Headway Circle, Building 2
              Austin, Texas 78754

Date:         June 8, 2001

     THIS AMENDMENT TO LOAN AGREEMENTS is entered into between Silicon Valley
Bank ("Silicon") and the borrower named above ("Borrower").

     Silicon and Borrower have entered into (i) a Loan and Security Agreement
dated June 8, 1999 (as amended, the "Domestic Loan Agreement"), and (ii) a Loan
and Security Agreement (Exim Program) dated June 8, 1999 (as amended, the "Exim
Loan Agreement"; the Domestic Loan Agreement and the Exim Loan Agreement may be
collectively referred to herein as the "Loan Agreements"), together with certain
documents, instruments and agreements related to the Loan Agreements.

     Silicon and Borrower agree to amend the Loan Agreements 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 Agreements.)

     1.  Domestic Loan Agreement Credit Limit.  In Section 1 of the Schedule to
the Domestic Loan Agreement, all language preceding the heading entitled "Letter
of Credit Sublimit" is hereby amended to read as follows:

     "1.  Credit Limit
          (Section 1.1):  An amount not to exceed the lesser of a total of
                          $3,000,000 at any one time outstanding (the "Maximum
                          Credit Limit"), or the sum or (a) and (b) below:

                          (a)  85% of the amount of Borrower's Eligible
                               Receivables (as defined in Section 8 above), plus

                          (b)  an amount not to exceed the lesser of:

                               (1)  40% of the value of Borrower's Eligible
                                    Inventory (as defined in Section 8 above),
                                    calculated at the lower of cost or market
                                    value

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                                    and determined on a first-in, first-out
                                    basis;

                                    or

                               (2)  $500,000."

     2.  Domestic Loan Agreement Interest Rate.  Section 2 of the Schedule to
the Domestic Loan Agreement is hereby amended in its entirety to read as
follows:

     "2.  Interest.
       Interest Rate

       (Section 1.2):  A rate equal to the "Prime Rate" in effect from time to
                       time, plus 1.25% per annum.  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.

       Minimum Monthly
       Interest (Section 1.2):  N/A."
     3.  Domestic Loan Agreement Maturity Date.  Section 4 of the Schedule to
the Domestic Loan Agreement is hereby amended in its entirety to read as
follows:

     "4.  Maturity Date
         (Section 6.1):   June 8, 2002."

     4.  Domestic Loan Agreement Audit Fees.  In the third sentence of Section
5.4 of the Domestic Loan Agreement, the amount "$600" is hereby replaced by the
amount "$700", so that such sentence now reads as follows:

     "The foregoing inspections and audits shall be at Borrower's expense and
     the charge therefor shall be $700 per person per day (or such higher amount
     as shall represent Silicon's then current standard charge for the same),
     plus reasonable out of pocket expenses."

     5.  Domestic Loan Agreement Early Termination Fee.  Section 6.2 of the
Domestic Loan Agreement is hereby amended in its entirety to read as follows:

          "6.2  Early Termination.  This Agreement may be terminated prior to
     the Maturity Date as follows:  (i) by Borrower, effective three Business
     Days after written notice of termination is given to Silicon; or (ii) by
     Silicon at any time after the occurrence of an Event of Default, without
     notice, effective immediately.  If this Agreement is terminated by

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     Borrower or by Silicon under this Section 6.2, Borrower shall pay to
     Silicon a termination fee in an amount equal to * two percent (2.0%) of the
     Maximum Credit Limit, provided that no termination fee shall be charged if
     the credit facility hereunder is replaced with a new facility from another
     division of Silicon Valley Bank**. The termination fee shall be due and
     payable on the effective date of termination and thereafter shall bear
     interest at a rate equal to the highest rate applicable to any of the
     Obligations.

     * one percent (1.0%)

     ** or is paid from the proceeds of a merger between Borrower and 3D
     Systems, pursuant to the terms of the merger proposal between Borrower and
     3D Systems dated April 2, 2001"

     6.  Domestic Loan Agreement Fee.  In consideration for Silicon agreeing to
amend the Domestic Loan Agreement as set forth herein, Borrower shall
concurrently pay Silicon a fee in the amount of $10,000, which shall be non-
refundable and in addition to all interest and other fees payable to Silicon
under the Loan Agreements.  Silicon is authorized to charge said fee to
Borrower's loan account.

     7.  Exim Loan Agreement Interest Rate.  Section 2 of the Schedule to the
Exim Loan Agreement is hereby amended in its entirety to read as follows:

     "2.  Interest.
       Interest Rate

       (Section 1.2):  A rate equal to the "Prime Rate" in effect from time to
                       time, plus 1.25% per annum.  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.

       Minimum Monthly
       Interest (Section 1.2):  N/A."
     8.  Exim Loan Agreement Maturity Date.  Section 4 of the Schedule to the
Exim Loan Agreement is hereby amended in its entirety to read as follows:

     "4.  Maturity Date
         (Section 6.1):   June 8, 2002."

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     9.  Exim Loan Agreement Audit Fees.  In the third sentence of Section 5.4
of the Exim Loan Agreement, the amount "$600" is hereby replaced by the amount
"$700", so that such sentence now reads as follows:

     "The foregoing inspections and audits shall be at Borrower's expense and
     the charge therefor shall be $700 per person per day (or such higher amount
     as shall represent Silicon's then current standard charge for the same),
     plus reasonable out of pocket expenses."

     10.  Exim Loan Agreement Early Termination Fee.  Section 6.2 of the Exim
Loan Agreement is hereby amended in its entirety to read as follows:

          "6.2  Early Termination.  This Agreement may be terminated prior to
     the Maturity Date as follows:  (i) by Borrower, effective three Business
     Days after written notice of termination is given to Silicon; or (ii) by
     Silicon at any time after the occurrence of an Event of Default, without
     notice, effective immediately.  If this Agreement is terminated by Borrower
     or by Silicon under this Section 6.2, Borrower shall pay to Silicon a
     termination fee in an amount equal to * two percent (2.0%) of the Maximum
     Credit Limit, provided that no termination fee shall be charged if the
     credit facility hereunder is replaced with a new facility from another
     division of Silicon Valley Bank**.  The termination fee shall be due and
     payable on the effective date of termination and thereafter shall bear
     interest at a rate equal to the highest rate applicable to any of the
     Obligations.

     * one percent (1.0%)

     ** or is paid from the proceeds of a merger between Borrower and 3D
     Systems, pursuant to the terms of the merger proposal between Borrower and
     3D Systems dated April 2, 2001"

     11.  Exim Loan Agreement Fee.  In consideration for Silicon agreeing to
amend the Exim Loan Agreement as set forth herein, Borrower shall concurrently
pay Silicon a fee in the amount of $22,500, which shall be non-refundable and in
addition to all interest and other fees payable to Silicon under the Loan
Agreements.  Silicon is authorized to charge said fee to Borrower's loan
account.

     12.  Representations True.  Borrower represents and warrants to Silicon
that all representations and warranties set forth in the Loan Agreements, as
amended hereby, are true and correct.

     13.  General Provisions.  This Amendment, the Loan Agreements, any prior
written amendments to the Loan Agreements signed by Silicon and Borrower, and
the other written documents and agreements between Silicon and Borrower set
forth in full

                                       4
<PAGE>

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 Agreements, and all other documents and agreements between Silicon

                                       5
<PAGE>

and Borrower shall continue in full force and effect and the same are hereby
ratified and confirmed.

Borrower:                                Silicon:

DTM CORPORATION                          SILICON VALLEY BANK

By /s/ JOHN S. MURCHISON, III            By  /s/ MILAD I. HANNA
   ------------------------------           --------------------------------
   President or Vice President           Title Senior Vice President
                                               -----------------------------

By  /s/  GEOFFREY W. KREIGER
   ------------------------------
   Secretary or Ass't Secretary

                                       6

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