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                                                                   Exhibit 4.6.1

                                 AMENDMENT NO. 1
                                       TO
            RPM, INC. UNION 401(k) RETIREMENT SAVINGS TRUST AND PLAN


     This Amendment No. 1 is executed as of the date set forth below by RPM,
Inc. (hereinafter called the "Company");

                                   WITNESSETH:

     WHEREAS, the Company maintains the RPM, Inc. Union 401(k) Retirement
Savings Trust and Plan (hereinafter called the "Trust and Plan") for the benefit
of certain eligible employees of Participating Companies; and

     WHEREAS, it is the desire of the Company to amend the Trust and Plan to
reflect that future matching contributions will be made in cash rather than
Company stock, to permit Participants to direct the investment of a portion of
future employee and matching contributions in Company stock and to permit
Accountholders to transfer amounts out of the Pre-Tax Contribution Stock Fund
and Matching Contribution Stock Fund into other investment funds; and

     WHEREAS, the Company reserved the right to amend the Trust and Plan
pursuant to Section 21.1 thereof;

     NOW, THEREFORE, pursuant to Section 21.1 of the Trust and Plan, the Company
hereby amends the Trust and Plan, effective as of October 1, 2002, as follows:

     1.   Section 5.3 of the Trust and Plan is hereby amended by the deletion of
said Section 5.3 and the substitution in lieu thereof of the following:

          5.3  Payment to the Trustee.

               The Participating Companies shall make the contributions
     specified in Sections 5.1 and 5.2 hereof to the Trustee in cash not later
     than the last day upon which


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     the Participating Company may make a contribution under this Trust and Plan
     and secure under the Code a deduction of such contribution in the
     computation of its Federal income taxes for the Taxable Year for which such
     contribution is made.


     2. Section 7.7 of the Trust and Plan is hereby amended by the deletion of
said Section 7.7 and the substitution in lieu thereof of the following:

          7.7  Maintenance of Matching Contribution Stock Fund.

               The Trustee shall maintain a Matching Contribution Stock Fund
     within the Trust Fund. Prior to October 1, 2002, matching contributions
     made by the Participating Companies on a Participant's behalf and
     contributed to the Trust and Plan pursuant to the provisions of the Trust
     and Plan at such time and all dividends and other amounts attributable to
     such matching contributions that were made in Shares or made in cash and
     used to purchase Share shall continue to be held and invested in the
     Matching Contribution Stock Fund, subject to the diversification provisions
     of Section 7.14 hereof.

          On and after October 1, 2002, an Accountholder may, in accordance with
     Section 7.17 hereof, direct that the matching contributions made on his
     behalf be held and invested in the Matching Contribution Stock Fund.

     3. Section 7.9 of the Trust and Plan is hereby deleted and the following is
substituted therefor:

          7.9 [RESERVED]

     4. Section 7.14 of the Trust and Plan is hereby amended by the deletion of
said Section 7.14 and the substitution in lieu thereof of the following:



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          7.14 Diversification Of Investments.

               An Accountholder may elect to sell the Shares, if any, credited
     to his Pre-Tax Contribution Stock Fund or Matching Contribution Stock Fund
     at any time and to direct the investment of the proceeds from such sale
     into any other investment fund established hereunder. Any such direction
     shall be made in accordance with the provisions of this Article 7.
     Accountholders may not elect to invest in Shares in any investment fund
     hereunder except as permitted in Section 7.17 below. Accountholders may not
     elect to invest in Shares through the Pre-Tax Contribution Stock Fund or
     Matching Contribution Stock Fund by transferring amounts from other
     investment funds into said stock funds.

     5.   Article 7 of the Trust and Plan is hereby amended by the addition
thereto of a new Sections 7.16 and 7.17 to read as follows:

          7.16 Maintenance of Pre-Tax Contribution Stock Fund.

               The Trustee shall maintain a Pre-Tax Contribution Stock Fund
     within the Trust Fund. On and after October 1, 2002, an Accountholder may,
     in accordance with Section 7.17 hereof, direct that a portion of the pre-
     tax contributions made on his behalf be held and invested in the Pre-Tax
     Contribution Stock Fund.

          7.17 Procedures for Direction of Investment in Company Stock Funds.

               On and after October 1, 2002, an Accountholder may direct the
     Trustee to invest up to twenty percent (20%) of his pre-tax and matching
     contributions made to the Trust and Plan in the Pre-Tax Contribution Stock
     Fund and Matching Contribution Stock Fund. An Accountholder may only invest
     in Shares through the Pre-Tax Contribution Stock Fund and Matching
     Contribution Stock Fund for pre-tax and matching


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     contributions made on or after October 1, 2002. All such directions shall
     be deemed to be continuing directions until they shall have been changed.
     Any such changes shall be made in accordance with the provisions of
     Sections 7.4 and 7.5 hereof. Amounts invested and held in the Pre-Tax
     Contribution Stock Fund and the Matching Contribution Stock Fund, pursuant
     to this Section, shall be subject to the diversification requirements of
     Section 7.14 hereof.

     IN WITNESS WHEREOF, the Company, by its duly authorized officers, has
executed this Amendment No. 1 this 27th day of August, 2002.

                                        RPM, Inc.

                                                        ("Company")

                                        By: /s/ Ronald A. Rice
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                                        And: /s/ Keith R. Smiley
                                             -----------------------------------

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