<PAGE>

                                 EMPLOYMENT AGREEMENT
                                       BETWEEN
                                EARTHSHELL CORPORATION
                                         AND
                                 WILLIAM F. SPENGLER

          This Employment Agreement (the "Agreement") is entered into as of 
March 23, 1998 (the "Effective Date") by and between EarthShell Corporation, 
a Delaware corporation with its principal office located in Santa Barbara, 
California (the "Company"), and William F. Spengler, an individual 
("Executive").

                                      AGREEMENT

          1.   SERVICES PROVIDED TO THE COMPANY.  Commencing as of April 13, 
1998 ("Start Date"), Executive shall be employed by the Company as its Senior 
Vice President, and Executive agrees to such employment.  During the term of 
this Agreement, Employee shall devote all of his regular working hours to the 
business and welfare of the Company and its subsidiaries.  Executive, 
however, may spend a reasonable amount of time with respect to charitable and 
civic activities (including serving on the board of directors of charitable 
organizations) and may make personal investments or conduct private business 
affairs to the extent that such activities do not materially interfere with 
the services required under this Agreement.  It is envisioned that Executive 
shall eventually become the Chief Financial Officer of the Company.

          2.   COMPENSATION TO EXECUTIVE.

               (a)  BASE SALARY.  During the term of this Agreement, the 
Company shall pay to Executive a base salary in the amount of $360,000 per 
annum, payable in accordance with the normal payment pattern of the Company, 
not to be less frequently than monthly.  The Base Salary shall commence to 
accrue on the Start Date.

               (b)  STOCK OPTIONS.  Pursuant to the Company's 1995 Stock 
Incentive Plan (the "Plan"), on the Effective Date, the Company shall grant 
to Executive options to acquire 100,000 shares of the Company's common stock 
(based on a 262 for one stock split) at an exercise price equal to the price 
per share at which the Company's common stock is first sold to the public in 
its initial public offering. Such options shall vest at the rate of 25% on 
each anniversary of the Effective Date. All options shall become fully vested 
on the fourth anniversary of the Effective Date.

               (c)  ADDITIONAL COMPENSATION.  Executive may also be entitled 
to receive (i) an annual bonus in an amount equal to one year's base salary 
provided certain financial and other milestones are met by the Company and 
Executive, as determined by Executive and the Compensation Committee (the 
"Compensation Committee") of the Company's Board of Directors (the "Board") 
within 60 days following the date of this Agreement, and, in the event such 
milestones are not met or are significantly exceeded, such 

<PAGE>

other lesser or greater bonus as the Compensation Committee shall determine 
is its sole discretion,  and (ii) options or other rights to acquire the 
Company's common stock pursuant to the Plan, under such terms and conditions 
as are determined by the Stock Option Committee (the "Option Committee") of 
the Board in its sole discretion. In making such determinations, the 
Compensation Committee and Option Committee shall consider, among other 
things, the annual financial results of the Company, meeting critical 
milestones on the business plan and Executive's contributions thereto.

          3.   EMPLOYEE BENEFITS.  The Company shall provide to Executive 
each of the following benefits:

               (a)  BUSINESS EXPENSES.  The Company shall pay or reimburse 
Executive for all reasonable out-of-pocket expenses incurred by Executive in 
the course of providing his services hereunder and which are consistent with 
the Company's expense reimbursement guidelines or policies.  Such 
reimbursement shall be made by the Company within thirty (30) days after 
receipt of a statement therefor from Executive setting forth in reasonable 
detail the expenses for which reimbursement is requested, accompanied by 
reasonable documentation evidencing such expenses.

               (b)  INSURANCE COVERAGE AND BENEFITS.  Beginning on the Start 
Date, the Company shall provide Executive, at the Company's expense, coverage 
under the major medical, hospitalization, disability and other insurance 
programs maintained by the Company for its officers generally, or if none is 
made for its officers generally, its employees generally, including any 
benefit plans that are provided by the Company subsequent to the date of this 
Agreement.  In addition, Executive shall receive on the Start Date all other 
Company-provided benefits, including sick pay benefits, that are, from time 
to time, made available by the Company to its officers generally or, if not 
made to its officers generally, its employees generally. Executive shall be 
entitled to four weeks paid vacation each year.  

          4.   TERMINATION.  Executive's employment hereunder may be 
terminated upon thirty (30) days written notice by Executive or the Company, 
provided that if Company terminates Executive's employment for other than 
cause, Executive shall be entitled to severance pay equal to 100% of his 
annual base salary.  Notwithstanding the foregoing, Executive shall not be 
entitled to any severance payment if his employment shall be terminated for 
cause.  Cause means the occurrence of any of the following events:  (i) 
willful and continued failure (to include such failure due to (a) death or 
(b) disability for a consecutive period of ninety (90) days or more) by the 
Executive to substantially perform his duties with the Company; provided, 
however, that the Executive must be notified by the Company of any such 
failure to perform his duties and shall have thirty (30) days from the date 
of such notice to cure such failure; (ii) any act by the Executive of fraud, 
misappropriation, dishonesty, embezzlement or similar conduct against the 
Company; or (iii) indictment or conviction of the Executive for a felony or 
any other crime involving moral turpitude.

          5.   CONFIDENTIAL AND PROPRIETARY INFORMATION.  Executive agrees to 
execute and deliver to the Company its standard non-disclosure agreement with 
respect to the Company's 

<PAGE>

confidential and proprietary information.  Such agreement shall be effective 
as of the Effective Date.

          6.   GENERAL PROVISIONS.

               (a)  NOTICES.  Any notice to be given pursuant to this 
Agreement shall be in writing and, in the absence of receipted hand delivery, 
shall be deemed duly given when mailed, if the same shall be sent by 
certified or registered mail, return receipt requested, or by a nationally 
recognized overnight courier, and the mailing date shall be deemed the date 
from which all time periods pertaining to a date of notice shall run.  
Notices shall be addressed to the parties at the following addresses:

     If to the Company, to:   EarthShell Corporation
                              800 Miramonte Drive
                              Santa Barbara, California 93109
                              Attention:  Chairman of the Board

     If to Executive, to:     William F. Spengler
                              3611 Jackson Cabin Road
                              Phoenix, Maryland 21131

               (b)  SUCCESSORS AND ASSIGNS.  This Agreement shall be binding 
upon and shall inure to the benefit of the Company and any successors whether 
by merger, consolidation, transfer of substantially all assets or similar 
transaction, and it shall be binding upon and shall inure to the benefit of 
Executive and his heirs and legal representatives.  This Agreement is 
personal to Executive and shall not be assignable by Executive.

               (c)  WAIVER OF BREACH.  The waiver by the Company or Executive 
of a breach of any provision of this Agreement by the other shall not operate 
or be construed as a waiver of any subsequent breach by the other.

               (d)  ENTIRE AGREEMENT/AMENDMENT.  This Agreement shall 
constitute the entire agreement between the parties hereto with respect to 
the subject matter hereof, and shall supersede all previous oral and written 
and all contemporaneous oral negotiations, commitments, agreements and 
understandings relating hereto.  Any amendment to this Agreement shall be 
effective only if it is in writing and signed by the parties to this 
Agreement.

               (e)  APPLICABLE LAW.  The validity of this Agreement and the 
interpretation and performance of all of its terms shall be construed and 
enforced in accordance with the laws of the State of California without 
reference to choice or conflict of law principles.

               (f)  SEVERABILITY.  Any provision of this Agreement that is 
deemed invalid, illegal or unenforceable in any jurisdiction shall, as to 
that jurisdiction and subject to this paragraph, be ineffective to the extent 
of such invalidity, illegality or unenforceability, without affecting in any 
way the remaining provisions hereof in such jurisdiction or rendering that or 
any other provision of this Agreement invalid, illegal or unenforceable in 
any other jurisdiction.  If 

<PAGE>

any covenant should be deemed invalid, illegal or unenforceable because its 
scope is considered excessive, such covenant shall be modified so that the 
scope of the covenant is reduced only to the minimum extent necessary to 
render the modified covenant valid, legal and enforceable.

          IN WITNESS WHEREOF, the undersigned have executed this Agreement as 
of the date first above written.


                              EARTHSHELL CORPORATION,
                              a Delaware corporation


                              By:  
                                   ------------------------
                              Title:    
                                    -----------------------
          
                              WILLIAM F. SPENGLER


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