Document:

THIS
      NOTE
      HAS NOT BEEN AND WILL NOT BE REGISTERED WITH THE UNITED STATES SECURITIES AND
      EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE OR UNDER THE
      SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”). THE SECURITIES ARE RESTRICTED
      AND MAY NOT BE OFFERED, RESOLD, PLEDGED OR TRANSFERRED EXCEPT AS PERMITTED
      UNDER
      THE ACT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT OR AN EXEMPTION FROM
      SUCH REGISTRATION REQUIREMENTS.

    

    

      
        	
                No.[___]
                  

              	
                 $[______]
                  Principal Amount

              

      

    

    

    Original
      Issuance: September 30, 2006

    

    BioMetrx,
      Inc.

    

    10%
      NOTE DUE March 30, 2007

     

     

    THIS
      NOTE
      is issued by BioMetrx,
      Inc.,
      a
      Delaware corporation (the“Company”),
      and is
      part of an issue of an aggregate of up to $25,000 principal amount of Notes
      due
      March 30, 2007 (the “Notes”).

    

    FOR
      VALUE
      RECEIVED, the Company promises to pay to [____________________],
      or
      permitted assigns (the“Holder”),
      the
      principal sum of __________________________
      (US $[_________]) Dollars
      on March
      30, 2007 (the “Maturity
      Date”)
      and to
      pay simple interest on the principal sum outstanding at the rate of 10% per
      annum. Accrual of interest shall commence on the date of initial issuance set
      forth the above (“Original
      Issuance”)
      and
      continue daily on the basis of a 360 day year until payment in full of the
      principal sum has been made or duly provided for. If the Maturity Date is not
      a
      business day in the State of New York, then such payment shall be made on the
      next succeeding business day. Subject to the provisions of Section 3 below,
      principal and accrued interest on this Note are payable in cash on the Maturity
      Date, at the address last appearing on the Note Register of the Company as
      designated in writing by the Holder from time to time. The Company will pay
      the
      principal of and any accrued but unpaid interest due upon this Note on the
      Maturity Date, less any amounts required by law to be deducted, to the
      registered holder of this Note as of the fifth day prior to the Maturity Date
      and addressed to such holder at the last address appearing on the Note register
      maintained by or on behalf of the Company (the “Note
      Register”).
      The
      forwarding of such check representing immediately available funds shall
      constitute a payment of principal and interest hereunder and shall satisfy
      and
      discharge the liability for principal and interest on this Note to the extent
      of
      the sum represented by such check, plus any amounts so deducted.

    

    This
      Note
      is subject to the following additional provisions:

    

    1. Withholding
      and Issuance Taxes.
      The
      Company shall be entitled to withhold from all payments of principal of, and
      interest on, this Note any amounts required to be withheld under the applicable
      provisions of the United States income tax laws or other applicable laws at
      the
      time of such payments, and Holder shall execute and deliver all required
      documentation in connection therewith. 

    

    
      
         

      

      
         

        
          

        

      

      
         

      

       

    

    2. Transfer
      of Note.
      This
      Note has been issued subject to investment representations of the original
      purchaser hereof and may be transferred or exchanged only in compliance with
      the
      Securities Act of 1933, as amended (the “Securities
      Act”),
      and
      other applicable state and foreign securities laws. The Holder shall deliver
      written notice to the Company of any proposed transfer of this Note. In the
      event of any proposed transfer of this Note, the Company may require, prior
      to
      issuance of a new Note in the name of such other person, that it receive
      reasonable transfer documentation including legal opinions that the issuance
      of
      the Note in such other name does not and will not cause a violation of the
      Securities Act or any applicable state or foreign securities laws. Prior to
      due
      presentment for transfer of this Note, the Company and any agent of the Company
      may treat the person in whose name this Note is duly registered on the Company’s
      Note Register as the owner hereof for the purpose of receiving payment as herein
      provided and for all other purposes, whether or not this Note be overdue, and
      neither the Company nor any such agent shall be affected by notice to the
      contrary. This Note has been executed and delivered pursuant to the Securities
      Purchase Agreement dated as of September 15, 2006 between the Company and the
      original Holder (the “Purchase
      Agreement”),
      and is
      subject to the terms and conditions of the Purchase Agreement, which are, by
      this reference, incorporated herein and made a part hereof. Capitalized terms
      used and not otherwise defined herein shall have the meanings set forth for
      such
      terms in the Purchase Agreement.

    

    3. Notices.
      In case
      at any time:

    

    (a) the
      Company shall declare any dividend upon its members payable in cash or stock
      or
      make any other pro rata distribution to the holders of its Common Stock; or
      

    

    (b) the
      Company shall offer for subscription pro rata
      to the
      holders of its equity any additional equity interest of any class or other
      rights; or 

    

    (c) there
      shall be any capital reorganization or reclassification of the equity of the
      Company, or a consolidation or merger of the Company with or into, or a sale
      of
      all or substantially all its assets to, another entity or entities; or

    

    (d) there
      shall be a voluntary or involuntary dissolution, liquidation or winding up
      of
      the Company; then, in any one or more of said cases, the Company shall give,
      by
      first class mail, postage prepaid, or by telex or facsimile or by recognized
      overnight delivery service, addressed to the Holder at the address of the Holder
      as shown on the books of the Company, (i) at least 10 days’ prior written notice
      of the date on which the books of the Company shall close or a record shall
      be
      taken for such dividend, distribution or subscription rights or for determining
      rights to vote in respect of any such reorganization, reclassification,
      consolidation, merger, sale, dissolution, liquidation or winding up and (ii)
      in
      the case of any such reorganization, reclassification, consolidation, merger,
      sale, dissolution, liquidation or winding up, at least 10 days’ prior written
      notice of the date when the same shall take place. Such notice in accordance
      with the foregoing clause (i) shall also specify, in the case of any such
      dividend, distribution or subscription rights, the date on which the holders
      of
      Equity shall be entitled thereto and (ii) shall also specify the date on which
      the holders of Equity shall be entitled to exchange their Equity for securities
      or other property deliverable upon such reorganization, reclassification,
      consolidation, merger, sale, dissolution, liquidation or winding up, as the
      case
      may be.

     

    
      
         

      

      
        2

        
          

        

      

      
         

      

       

    

    4. Event
      of Default.
      Each
      of
      the following shall constitute an “Event
      of Default”:

    

    (a) the
      Company shall default in the payment of principal or interest on this Note
      and
      same shall continue for a period of five (5) days; or

    

    (b) any
      of
      the material representations or warranties made by the Company herein, in the
      Purchase Agreement, or in any agreement, certificate or financial or other
      written statements heretofore or hereafter furnished by the Company in
      connection with the execution and delivery of this Note or the Purchase
      Agreement, shall be false or misleading in any material respect at the time
      made, and such default is not cured within 14 days of receipt of written notice
      specifying the nature of the misrepresentation; or 

    

    (c) the
      Company shall (i) make an assignment for the benefit of creditors or commence
      proceedings for its dissolution; or (ii) apply for or consent to the appointment
      of a trustee, liquidator or receiver for its or for a substantial part of its
      property or business; or

    

    (d) a
      trustee, liquidator or receiver shall be appointed for the Company or for a
      substantial part of its property or business without its consent and shall
      not
      be discharged within sixty (60) days after such appointment; or

    

    (e) any
      governmental agency or any court of competent jurisdiction at the instance
      of
      any governmental agency shall assume custody or control of the whole or any
      substantial portion of the properties or assets of the Company and shall not
      be
      dismissed within sixty (60) days thereafter; or

    

    (f) any
      final
      money judgment, writ or warrant of attachment, or similar process in excess
      of
      Two Hundred Thousand ($200,000) Dollars in the aggregate shall be entered or
      filed against the Company or any of its properties or other assets and shall
      remain unpaid, unvacated, unbonded or unstayed for a period of sixty (60) days
      or in any event later than five (5) days prior to the date of any proposed
      sale
      thereunder; or

    

    (g) bankruptcy,
      reorganization, insolvency or liquidation proceedings or other proceedings
      for
      relief under any bankruptcy law or any law for the relief of debtors shall
      be
      instituted by or against the Company and, if instituted against the Company,
      shall not be dismissed within sixty (60) days after such institution or the
      Company shall by any action or answer approve of, consent to, or acquiesce
      in
      any such proceedings or admit the material allegations of, or default in
      answering, a petition filed in any such proceeding. 

     

    5. Acceleration
      and Remedies

    

    (a) Acceleration
      of Maturity.
      If any
      Event of Default shall have occurred and be continuing, the Holder or Holders
      of
      at least 50.1% in aggregate principal amount of outstanding Notes may, by notice
      to the Company, declare the entire outstanding principal balance of the Notes,
      and all accrued and unpaid interest the thereon, to be due and payable
      immediately, and upon any such declaration the entire outstanding principal
      balance of the Notes, if any, and said accrued and unpaid interest shall become
      and be immediately due and payable, without presentment, demand, protest or
      other notice. whatsoever, all of which are hereby expressly waived, anything
      in
      the Notes or in this Agreement to the contrary notwithstanding; provided
      that if
      an Event of Default under paragraph (d) or (g) of Section 5 with respect to
      the
      Company or any Subsidiary shall have occurred, the outstanding principal amount
      of all of the Notes, and all accrued and unpaid interest thereon, shall
      immediately become due and payable in cash, without any declaration and without
      presentment, demand, protest or other notice whatsoever, all of which are hereby
      expressly waived, anything in the Notes or this Agreement to the contrary
      notwithstanding.

     

    
      
         

      

      
        3

        
          

        

      

      
         

      

       

    

    (b) Other
      Remedies.
      If any
      Event of Default shall have occurred and be continuing, from and including
      the
      date of such Event of Default to but not including the date such Event of
      Default is cured or waived, interest will accrue at an annual default rate
      of
      16% and, any Holder of 25% in aggregate principal amount of outstanding Notes
      may enforce its rights by suit in equity, by action at law, or by any other
      appropriate proceedings, whether for the specific performance (to the extent
      permitted by law) of any covenant or agreement contained in the Purchase
      Agreement or the Notes or in aid of the exercise of any power granted this
      Agreement or the Notes, and any Holder may enforce the payment of any Note
      held
      by such Holder and any of its other legal or equitable rights.

    

    (c)
       Conduct
      No Waiver; Collection Expenses.
      No
      course of dealing on the part of any Holder, nor any delay or failure on the
      part of any Holder to exercise any of its rights, shall operate as a waiver
      of
      such right or otherwise prejudice such Holders rights, powers and remedies.
      If
      the Company fails to pay, when due, the principal or the premium, if any, or
      the
      interest on any Note, the Company will pay to each Holder, to the extent
      permitted by law, on demand, all costs and expenses incurred by such Holder
      in
      the collection of any amount due in respect of any Note hereunder, including
      reasonable legal fees incurred by such Holder in enforcing its rights
      hereunder.

    

    (d) Annulment
      of Acceleration.
      If a
      declaration is made in accordance with paragraph 6(a), then and in every such
      case, the Holder or Holders of at least 50.1% in aggregate principal amount
      of
      outstanding Notes may, by an instrument delivered to the Company, annul such
      declaration and the consequences thereof, provided
      that at
      the time such declaration is annulled:

    

    (i) no
      judgment or decree has been entered for the payment of any monies due on the
      Notes or pursuant to the Purchase Agreement;

     

    (ii) all
      arrears of interest on the Notes and all other sums payable on the Notes and
      pursuant to this Agreement (except any principal of or interest or premium
      on
      the Notes which has become due and payable by reason of such declaration) shall
      have been duly paid; and

     

    (iii)
      every other Event of Default shall have been duly waived or otherwise made
      good
      or cured;

     

    
      
         

      

      
        4

        
          

        

      

      
         

      

    

     

    provided, however,
      that
      only the Holder of the Note or Notes making the declaration permitted by the
      of
      paragraph 6(b) may annul such declaration; and provided, further,
      that no
      such annulment shall extend to or affect any subsequent Event of Default or
      impair any right consequent thereon.

    

    (e) Remedies
      Cumulative.
      No
      right or remedy conferred upon or reserved to the Holders of Notes is intended
      to be exclusive of any other right or remedy, and every right and remedy shall
      be cumulative and in addition to every other right and remedy given hereunder
      or
      now and hereafter existing under applicable law. Every right and remedy given
      by
      the Purchase Agreement or by applicable Law to the Holders of Notes may be
      exercised from time to time and as often as may be deemed expedient by the
      Holders. 

    

    6. No
      Recourse to Stockholders, etc.
      No
      recourse shall be had for the payment of the principal of, or the interest
      on,
      this Note, or for any claim based hereon, or otherwise in respect hereof,
      against any incorporator, shareholder, employee, officer or director, as such,
      past, present or future, of the Company or any successor corporation, whether
      by
      virtue of any statute or rule of law, or by the enforcement of any assessment
      or
      penalty or otherwise, all such liability being, by the acceptance hereof and
      as
      part of the consideration for the issue hereof, expressly waived and
      released.

     

    7. No
      Rights as Stockholder.
      No
      provision of this Note shall be construed as conferring upon the Holder the
      right to vote or to receive dividends or to consent or receive notice as a
      stockholder in respect of any meeting of stockholders or any rights whatsoever
      as a stockholder of the Company, unless and to the extent converted in
      accordance with the terms hereof.

    

    8. Definitions.
      As used
      in this Note, 

    

    (a) “Affiliate”
and
      “Associate”
shall
      have the respective meanings ascribed to such terms in Rule 12b-2 of the General
      Rules and Regulations under the Exchange Act. 

    

    (b) “Beneficially
      Owned”
with
      respect to any securities shall mean having “beneficial ownership” of such
      securities (as determined pursuant to Rule 13d-3 under the Exchange Act),
      including pursuant to any agreement, arrangement or understanding, whether
      or
      not in writing.

    

    (c) “Original
      Issuance”
      means
      the Closing Date as set forth in the Purchase Agreement.

    

    (d) “Purchase
      Agreement”
      shall
      mean the several agreements under which the Holders of the Notes have purchased
      the Notes from the Company.

    

    9. Loss,
      Theft, Destruction of Note.
      Upon
      receipt of evidence satisfactory to the Company of the loss, theft, destruction
      or mutilation of this Note and, in the case of any such loss, theft or
      destruction, upon receipt of indemnity reasonably satisfactory to the Company
      (which shall not include the posting of any bond), or, in the case of any such
      mutilation, upon surrender and cancellation of this Note, the Company shall
      make, issue and deliver, in lieu of such lost, stolen, destroyed or mutilated
      Note, one or more new Notes of like tenor. This Note shall be held and owned
      upon the express condition that the provisions of this Section 12 are exclusive
      with respect to the replacement of mutilated, destroyed, lost or stolen Notes
      and shall preclude any and all other rights and remedies notwithstanding any
      law
      or statute existing or hereafter enacted to the contrary with respect to the
      replacement of negotiable instruments or other securities without the surrender
      thereof.

    

    
      
         

      

      
        5

        
          

        

      

      
         

      

       

    

    10. Record
      Owner.
      The
      Company may deem the person in whose name this Note shall be registered upon
      the
      registry books of the Company to be, and may treat such person as, the absolute
      owner of this Note for the purpose of conversion of this Note and for all other
      purposes, and the Company shall not be affected by any notice to the contrary.
      All such payments and such conversion shall be valid and effective to satisfy
      and discharge the liability upon this Note to the extent of the sum or sums
      so
      paid or the conversion so made.

     

    11. Construction.
      This
      Note shall be deemed to be jointly drafted by the Company and the initial
      Holders of the Notes and shall not be construed against any person as the
      drafter hereof.

    

    12. Amendments.
      The
      terms of the outstanding Notes may be amended as to the Holder and its
      respective successors and assigns, and the Company may take any action herein
      prohibited, or omit to perform any act required to be performed by it, if the
      Company shall obtain the written consent of the registered holders of not less
      than a majority of the outstanding principal amount of the Notes. This Agreement
      may not be waived, changed, modified, or discharged orally, but only by an
      agreement in writing signed by the party or parties against whom enforcement
      of
      any waiver, change, modification or discharge is sought or by parties with
      the
      right to consent to such waiver, change, modification or discharge on behalf
      of
      such party.

    

    13. Failure
      or Indulgence Not Waiver.
      No
      failure or delay on the part of the Holder of this Note in the exercise of
      any
      power, right or privilege hereunder shall operate as a waiver thereof (except
      to
      the extent that such power, right or privilege must, in accordance with the
      terms of this Note, be exercised within a specified period of time and such
      period of time has lapsed without such power, right or privilege being
      exercised), nor shall any single or partial exercise of any such power, right
      or
      privilege preclude other or further exercise thereof or of any other right,
      power or privilege.

    

    14. Governing
      Law.
      This
      Note
      shall be governed by and construed in accordance with the laws of the State
      of
      New York. Each of the parties consents to the jurisdiction of the United States
      District Court for the Eastern or Southern District of New York or the state
      courts of the State of New York located in Nassau County, New York in connection
      with any dispute arising under this Agreement and hereby waives, to the maximum
      extent permitted by law, any objection, including any objection based on forum
      non conveniens, to the bringing of any such proceeding in such
      jurisdictions.

    

    
      
         

      

      
        6

        
          

        

      

      
         

      

    

    

    IN
      WITNESS WHEREOF, the Company has caused this instrument to be duly executed
      by
      an officer thereunto duly authorized.

     

    
      	 	 	 
	Dated:
              ___________________, 2006 	BioMetrx,
              INC.
	 
 	 
 	 
 
	 	By:  	 
	 	
              
Name:
              Mark Basile
	 	Title:
              Chief Executive Officer 

    

     

     

    
      
         

      

      
        7CORNELL CAPITAL PARTNERS, LP
                          101 Hudson Street, Suite 3700
                              Jersey City, NJ 07302

September 29, 2006

EarthShell Corporation
1301 York Road, Suite 200
Lutherville, MD 20193
Attention: Scott Houston

Dear Mr. Houston

      This agreement (the "Agreement") will confirm our understanding regarding
the obligations of EARTHSHELL CORPORATION, a Delaware corporation (the
"Company") owed to CORNELL CAPITAL PARTNERS, LP ("Cornell"). The Company hereby
acknowledges, confirms and agrees that as of the close of business on September
29, 2006 the Company is indebted to Cornell pursuant to the Secured Convertible
Debenture dated December 30, 2005 (the "Convertible Debenture") in an amount of
$4,500,000 plus accrued and unpaid interest of $409,500.

      The Company and Cornell are each a party to that certain Investor
Registration Rights Agreement, dated December 30, 2005 (the "Registration Rights
Agreement"), entered into in connection with the Company's issuance of the
Convertible Debenture, pursuant to which the Company filed a registration
statement (the "Registration Statement") with the U.S. Securities and Exchange
Commission (the "Commission") to register the shares of the Company's common
stock, par value $0.001 per shares (the "Common Stock"), underlying the
Convertible Debentures on February 14, 2006. Pursuant to the Registration Rights
Agreement, the Company was obligated to obtain the effectiveness of the
Registration Statement by May 31, 2006 (the "Scheduled Effective Deadline").
Further, failure to obtain the effectiveness of the Registration Statement by
the Scheduled Effective Deadline shall result in the imposition of liquidated
damages ("Liquidated Damages") equal to one percent (1%) of the liquidated value
of the Convertible Debenture for each thirty (30) day period after the Scheduled
Effective Deadline and in addition to Liquidated Damages, the failure to obtain
the effectiveness of the Registration Statement by June 30, 2006 constituted an
event of default.

      On July 12, 2006 the Company and Cornell entered into a forbearance
agreement pursuant to which, among other things, Cornell agreed to forbear from
calling a default from the date thereof through September 30, 2006 as a result
of the Registration Statement not being declared effectiveness and Cornell
waived any Liquidated Damages through September 30, 2006. The Company
acknowledges that the Registration Statement will not be declared effective by
September 30, 2006 and that after such date, an event of default under the
Convertible Debentures shall have occurred as a result of the Registration
Statement not being declared effective with the Commission (the "Existing
Default").

      Our agreement is as follows:

<PAGE>

1.    In consideration of the accommodations made by Cornell to the Company set
      forth herein,

      a.    Within two business days of the date hereof, the Company shall issue
            to Cornell 187,500 shares of Common Stock (the "Shares"). The Shares
            and shall have "piggy back" registration rights and shall be
            included on any registration statement filed subsequent to the
            Registration Statement. Cornell shall also have the right to demand
            the registration of the Shares by providing the Company with 30
            day's advance written notice of such request. In the event the
            Registration Statement is declared effective prior to November 1,
            2006, Cornell shall return 125,000 of the Shares to the Company. In
            the event the Registration Statement is declared effective after
            November 1, 2006 and before December 1, 2006, Cornell shall return
            62,500 of the Shares to the Company. In the event that the
            Registration Statement is declared effective after December 1, 2006,
            Cornell shall not return any of the Shares.

      b.    Cornell shall waive any Liquidated Damages that may accrue from and
            after the date hereof through December 31, 2006.

      c.    The Company shall continue to work with the SEC to obtain the
            effectiveness of the Registration Statement and obtain such
            effectiveness by December 31, 2006.

      d.    In accordance with the terms of Section 3(c)(ii) of the Debenture,
            the Company agrees to waive the conversion restriction set forth in
            Section 3(c)(ii) of the Debenture with respect to conversions made
            at the option of Cornell.

      e.    All amounts owed, together with interest accrued and accruing
            thereon, and fees, costs, expenses and other charges (collectively,
            the "Obligations") now or hereafter payable by the Company to
            Cornell (including, without limitation, the amounts referenced in
            the table above) under the Convertible Debentures and all other
            agreements, contracts, instruments or other items delivered in
            connection therewith (collectively, along with this letter agreement
            shall be referenced herein as the "Transaction Documents") are
            unconditionally owing by the Company to Cornell, without offset,
            setoff, defense or counterclaim of any kind, nature or description
            whatsoever. All terms of the Transaction Documents not modified by
            this Agreement shall remain in full force and effect. An event of
            default on any Transaction Document shall constitute an Event of
            Default on all other Transaction Documents.

      f.    The Company hereby acknowledges, confirms and agrees that Cornell
            has and shall continue to have valid, enforceable and perfected
            first-priority liens upon and security interests in the Pledged
            Property (as defined in the Transaction Documents) heretofore
            granted pursuant to any and all security agreements or otherwise
            granted to or held by Cornell.

                                     - 2 -
<PAGE>

      g.    In reliance upon the representations, warranties and covenants of
            the Company contained in this Agreement, and subject to the terms
            and conditions set forth herein, Cornell hereby waives on a one-time
            basis only the Existing Defaults and further agree to forbear from
            exercising its rights and remedies under the Transaction Documents
            or applicable law in respect of or arising out of the Existing
            Defaults, subject to the conditions, amendments and modifications
            contained herein for the period (the "Forbearance Period")
            commencing on the date hereof and continuing for so long as the
            following conditions are met: (i) the Company strictly complies with
            the terms of this Agreement (including the covenant of the Company
            set forth in Section 2.d. hereof), and (ii) there is no occurrence
            or existence of any event of default, other than the Existing
            Default under the Transaction Documents or any other agreement that
            the Company has entered into with Cornell.

      h.    Upon the termination or expiration of the Forbearance Period, the
            agreement of Cornell to forbear shall automatically and without
            further action terminate and be of no force and effect, it being
            expressly agreed that the effect of such termination will be to
            permit Cornell to exercise such rights and remedies immediately,
            including, but not limited to, the acceleration of all of the
            Obligations without any further notice, passage of time or
            forbearance of any kind. This Agreement shall be deemed to satisfy
            any and all requirements by Cornell to notify the Company of the
            occurrence of the Existing Default and satisfies any obligation by
            Cornell to give the Company an opportunity to cure each Existing
            Default.

      i.    The Company hereto acknowledges, confirms and agrees that: (a) each
            of the Transaction Documents to which it is a party has been duly
            executed and delivered to Cornell by the Company, and each is in
            full force and effect as of the date hereof, (b) the agreements and
            obligations of the Company contained in such documents and in this
            Agreement constitute the legal, valid and binding obligations of the
            Company, enforceable against it in accordance with their respective
            terms, and the Company has no valid defense to the enforcement of
            such obligations, and (c) Cornell is and shall be entitled to the
            rights, remedies and benefits provided for in the Transaction
            Documents and applicable law, without offset, setoff, defense or
            counterclaim of any kind, nature or descriptions whatsoever.

      j.    This letter may be executed in any number of counterparts, each of
            which shall be deemed an original, and all of which shall constitute
            one and the same instrument. This letter shall be accepted,
            effective and binding, for all purposes, when the parties shall have
            signed and transmitted to each other, by telecopier or otherwise,
            copies of this letter. The terms of this letter supersede the terms
            of any other verbal or written agreement existing prior to the date
            hereof. In the event of any litigation arising hereunder, the
            prevailing party or parties shall be entitled to recover its or
            their reasonable attorneys' fees and court costs from the other
            party or parties, including the costs of bringing such litigation
            and collecting upon any judgments. This letter shall be binding upon
            and shall inure to the benefit of the parties hereto and their
            respective heirs, executors, legal representatives, trustees,
            successors and assigns. Except for the amounts expressly set forth
            herein, none of the parties hereto shall be liable to any other
            party for any amounts whatsoever.

                                     - 3 -
<PAGE>

2.    Payoff. Subject to the terms and conditions of the Section titled "Right
      of Redemption" in the Convertible Debenture, the Company may repay all
      outstanding amounts owed under the Convertible Debenture by paying to
      Cornell the sum of (i) the outstanding principal and unpaid interest as
      set forth in the first paragraph above, (ii) a per diem interest amount of
      $1,500 per day from the date hereof through the date payment is received,
      and (iii) the applicable Redemption Premium (as defined in the Convertible
      Debentures), less any adjustment to be made as a result of any conversions
      by Cornell (the "Payoff Amount"). Cornell hereby (i) acknowledges and
      agrees that payment of the Payoff Amount will constitute payment in full
      of all of the Company's obligations under the Convertible Debentures and
      (ii) shall release, effective upon the receipt of the Payoff Amount, all
      security interests and liens which the Company may have granted to the
      Cornell.

                   REMAINDER OF PAGE INTENTIONALLY LEFT BLANK

                                     - 4 -
<PAGE>

      If the foregoing correctly sets forth the terms of our agreement, please
sign this letter on the line provided below, whereupon it will constitute a
binding agreement among us.

                                        Sincerely,

                                        CORNELL EQUITY PARTNERS, LP

                                        By: Yorkville Advisors, LLC
                                        Its:  General Partner

                                        By:     /s/ Troy Rillo
                                           -------------------------------------
                                        Name:   Troy Rillo
                                        Title:  Managing Director

ACCEPTED AND AGREED:
EARTHSHELL CORPORATION

By:     /s/ Paul Susie
   ---------------------------
Name:   Paul Susie
Title:  Principal Accounting Officer

Acknowledged by:

/s/ Benton Wilcoxon
------------------------------
Benton Wilcoxon

                                     - 5 -

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