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EXHIBIT 10.38

Employment Letter for Martin E. McGough

May 10, 2000

Mr. Martin E. McGough
2028 Country Meadows
Grand Junction, CO 81503

Dear Marty,

    I'm pleased to confirm your promotion to the position of Sr. Vice President,
Development and Operations, continuing to report to me as CEO and effective
May 3, 2000. 3D Systems will relocate your family from Grand Junction, CO to the
Valencia, CA area in order for you to work out of our corporate offices.

    Your annual base salary of $240,000 will be reviewed annually at the time of
your performance evaluation.

    You will continue to participate in 3D Systems' annual Executive Incentive
Plan and your pay-out opportunity, as a percent of base salary, for fiscal year
2000 will be 10% @ threshold plan achievement (90% of annual revenue goal, plus
your other corporate and individual objectives), 30% @ plan achievement (100% of
revenue and other goals) and 1X @ stretch achievement (approximately 122% of
revenue and other goals). Earned payment for fiscal year 2000 will be prorated
between your former salary of $165,000 and your new salary of $240,000. If you
choose to amortize any part of your base salary for the purpose of purchasing a
home in the Valencia area; any earned incentive will be based on your gross
salary before amortization.

    You will be awarded additional stock options in an amount deemed appropriate
for the level of your new responsibility by the Compensation Committee of our
Board of Directors.

    You and your family will relocate from Grand Junction to the Valencia,
California area to accept this position. For this relocation, 3D Systems will
pay for:

•All costs associated with the purchase of your Colorado residence by a
relocation service to be selected, probably Prudential Real Estate Company.

•A reasonable number of trips to the Valencia area to find and purchase a
residence.

•All normal closing costs (including loan point fees but excluding mortgage
interest and property tax pro-rations, repairs and the like) related to the
purchase of a home in the Valencia area.

•The moving of all household effects to include packing and unpacking and
insurance.

•Reimbursement for actual out-of-pocket miscellaneous expenses incurred for the
relocation, such as charges for the connection or disconnection of appliances
and utilities.

•Reasonable costs to transport your family, vehicles and pets from Grand
Junction to the Valencia area.

•Reasonable temporary living expenses in Valencia, for a period not to exceed
one month, for lodging and meals while awaiting the arrival of your household
goods shipment.

•Storage of household effects for a reasonable period, if needed.

•An advanced capitalized amount of your new base salary in the amount of up to
$100,000 for the purpose of purchasing a residence in the Valencia area. Such
advance will be debited against your base salary over a 5 year period (a
$100,000 advance will reduce your paid base salary by $20,000 per year for
5 years). Credited base salary for annual incentive payment calculation and

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all other salary related benefits will remain at the full level ($240,000 for
year 2000), and will be taxable at that level in each of the five (5) years.

•All taxable relocation expenses, for which you are reimbursed, will be reported
as taxable income. All taxable relocation reimbursements will be grossed-up to
offset any additional tax liability on your part.

•Should you resign from 3D Systems or be discharged for cause within one year
from the date of receipt of all relocation allowances, the entire allowance will
be refundable to the Company and you agree to repay 3D Systems in full.

    Marty I believe this accurately reflects all of the items we have agreed to
regarding this new position. If I've missed anything, please bring it to my
attention.

    I'm delighted with your acceptance of this new role and look forward to
continuing to work with you as we achieve our objectives and move the company
forward.

Sincerely,

Brian Service
President and Chief Executive Officer
3D Systems

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EXHIBIT 10.38
Employment Letter for Martin E. McGough