UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*


                             3D Systems Corporation
                             ----------------------
                                (Name of Issuer)

                    Common Stock, $0.001 Par Value per Share
                    ----------------------------------------
                         (Title of Class of Securities)

                                    88554D205
                                    ---------
                                 (CUSIP Number)

                                December 31, 2004
                                -----------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[ ] Rule 13d-1(b)

[X] Rule 13d-1(c)

[ ] Rule 13d-1(d)

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).



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Schedule 13G/A

CUSIP No. 88554D205

 1. Names of Reporting Persons: Jay R. Harris
     I.R.S. Identification Nos. of above persons (entities only): Not Applicable

 2. Check the Appropriate Box if a Member of a Group (See Instructions):

         (a) [ ]

         (b) [ ]

 3.  SEC Use Only


 4. Citizenship or Place of Organization: U.S.

Number of          5.  Sole Voting Power:             209,785
Shares
Beneficially       6.  Shared Voting Power:           --0--
Owned by
Each               7.  Sole Dispositive Power:        229,072
Reporting
Person With        8.  Shared Dispositive Power:      619,901

 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 848,973

10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions): [ ]

11. Percent of Class Represented by Amount in Row (9): 6.24%

12. Type of Reporting Person (See Instructions): IN








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Item 1.

     (a) The name of the issuer is 3D Systems Corporation (the "Corporation").

     (b) The  Corporation's  executive  office is located at 26081  Avenue Hall,
Valencia, California 91355.

Item 2.

     (a) The person filing this statement is Jay R. Harris.

     (b) Mr. Harris' residence is 130 East End Avenue, New York, NY 10028.

     (c) Mr. Harris is a United States citizen.

     (d) The security (the  "Security")  is common  stock,  $0.001 par value per
share.

     (e) The CUSIP Number of the Security is 88554D205.

Item 3.

     Not applicable.

Item 4. Ownership

     (a) Mr. Harris is the  beneficial  owner of 848,973  shares of the Security
through the following:

          o his direct, personal ownership of shares of the Security;

          o his IRA;

          o his power of attorney for the  management of the account of the Lily
     Harris Trust;

          o his power of attorney for the management of the accounts of Lisa Eng
     and her IRA,  Lisa Eng, as  custodian  for  Samantha  Eng, and Lisa Eng, as
     custodian for George Eng;

          o his power of  attorney  for the  management  of the  accounts of Ann
     Lozman, her IRA and her Roth IRA;

          o his power of attorney  for the  management  of the  accounts of Emma
     Lozman and her Roth IRA;

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          o his power of attorney for the  management of the accounts of Melanie
     Turek and her roll-over IRA;

          o his power of attorney for the  management of the accounts of Melanie
     Turek,  as custodian for Sage Turek,  and Melanie  Turek,  as custodian for
     Cedar Turek;

          o his power of attorney  for the  management  of the account of Lesley
     Ochlis;

          o his position as President of The Jay and Sandra Harris Foundation;

          o his position as General Partner of One GT Associates; and

          o his  position  as  President  of  Goldsmith  &  Harris  Incorporated
     ("G&H"),  a  broker-dealer  registered  under Section 15 of the  Securities
     Exchange Act of 1934 and an investment adviser registered under Section 203
     of the  Investment  Advisers  Act of 1940,  by virtue  of G&H's  investment
     discretion  over  accounts of its clients that hold  619,901  shares of the
     Security.

     The 848,973  shares of the Security of which Mr.  Harris is the  beneficial
owner includes:  (i) 29,469 shares of the Security into which the $300,000 in 6%
Subordinated Convertible Debentures of the Corporation (the "Debentures"), which
are held in certain client  accounts over which G&H has  investment  discretion,
are convertible; (ii) 66,700 shares of the Security into which the 66,700 shares
of  Series  B  Convertible  Preferred  Stock  (the  "Preferred  Stock")  of  the
Corporation,  which  are held in  certain  client  accounts  over  which G&H has
investment discretion, are convertible; (iii) 33,000 shares of the Security into
which the 33,000 shares of Preferred  Stock,  which are held in Mr.  Harris' IRA
account, are convertible;  and (iv) 49,115 shares of the Security into which the
$500,000 in Debentures,  which are held in the account of One GT Associates over
which Mr. Harris has sole investment and voting discretion, are convertible. The
determination of the number of shares of the Security  beneficially owned by Mr.
Harris and the percentage such shares represent of all of the outstanding shares
of the Security was made in accordance  Rule  13d-3(d)(1)  under the  Securities
Exchange Act of 1934.

     (b) The amount of shares of the Security  beneficially  owned by Mr. Harris
is 6.24% of the total outstanding shares of the Security.

     (c)  (i) Mr. Harris  has the sole  power to vote or to  direct  the vote of
209,785 shares of the Security.

          (ii) Not applicable.

          (iii) Mr.  Harris  has the sole  power to  dispose,  or to direct  the
     disposition, of 229,072 shares of the Security.

          (iv) Mr. Harris shares with G&H the power to dispose, or to direct the
     disposition, of 619,901 shares of the Security.

                                       4





Item 5. Ownership of Five Percent or Less of a Class

     Not applicable.

Item 6. Ownership of More than Five Percent on Behalf of Another Person.

     The clients of G&H, the Lily Harris Trust,  Lisa Eng and her IRA, Lisa Eng,
as  custodian  for  Samantha  Eng,  Lisa Eng, as  custodian  for George Eng, Ann
Lozman,  her IRA and her Roth IRA,  Emma Lozman and her Roth IRA,  Melanie Turek
and her roll-over  IRA,  Melanie  Turek,  as custodian  for Sage Turek,  Melanie
Turek,  as custodian for Cedar Turek,  Lesley Ochlis,  The Jay and Sandra Harris
Foundation  and One GT Associates  may have the right to receive or the power to
direct the receipt of dividends  from,  or the proceeds from the sale of, shares
of the  Security.  None of these  persons  has an  interest in 5% or more of the
total outstanding shares of the Security.

Item 7. Identification  and Classification of the Subsidiary Which Acquired the
        Security Being Reported on By the Parent Holding Company.

     See Exhibit A.

Item 8. Identification and Classification of Members of the Group.

     Not applicable.

Item 9. Notice of Dissolution of Group.

     Not applicable.

Item 10. Certification.

     By signing  below I certify  that,  to the best of my knowledge and belief,
the  securities  referred  to above were not  acquired  and are not held for the
purpose of or with the effect of  changing  or  influencing  the  control of the
issuer of the  securities  and were not acquired and are not held in  connection
with or as a participant in any transaction having that purpose or effect.

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                                    SIGNATURE

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.


Date:  February 11, 2005                                                        

                                            /s/Jay R. Harris
                                            ----------------
                                            Jay R. Harris




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