Exhibit 4.2


                   FIRST AMENDMENT TO LOAN AGREEMENT AND NOTE


     THIS FIRST AMENDMENT TO LOAN AGREEMENT AND NOTE (this "Agreement") made and
delivered this 1st day of August, 2003, by and between TECSTAR,  LLC, an Indiana
limited  liability company (the "Company") and COMERICA BANK, a Michigan banking
corporation (the "Bank").

                                   WITNESSETH:

     WHEREAS,  the Company and the Bank entered into that certain Loan Agreement
dated February 13, 2002 (the "Loan Agreement");

     WHEREAS,  the  Company  and the Bank  desire to amend the terms of the Loan
Agreement and the Line Note (as defined in the Loan  Agreement)  pursuant to the
terms and conditions set forth below.

     NOW,  THEREFORE,  in  consideration  of the premises  above set forth,  the
covenants,  promises and  agreements  hereinafter  described  and other good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged,  the Company and the Bank agree that the Loan Agreement is amended
as follows:

     1.  Sections 1.1 and 1.2 of the Loan  Agreement  are amended to change each
reference to "April 1, 2004" to read "October 1, 2004."

     2. The Line Note is amended to extend the maturity date to October 1, 2004.

     3. The table in Section 4.13 is amended to read in its entirety as follows:

                  "March 31, 2003 through June 29, 2003              $1,500,000
                   June 30, 2003 through September 29, 2003          $2,000,000
                   September 30, 2003 through December 30, 2003      $2,500,000
                   December 31, 3003 through March 30, 2004          $2,750,000
                   March 31, 2004 through June 29, 2004              $3,000,000
                   June 30, 2004 through September 29, 2004          $3,250,000
                   September 30, 2004 and thereafter                 $3,500,000"

     4. The table in Section 4.14 is amended to read in its entirety as follows:

                  "March 31, 2003 through June 29, 2003             ($2,250,000)
                   June 30, 2003 through September 29, 2003         ($2,000,000)
                   September 30, 2003 through December 30, 2003     ($1,750,000)
                   December 31, 3003 through March 30, 2004         ($1,500,000)
                   March 31, 2004 through June 29, 2004             ($1,250,000)
                   June 30, 2004 through September 29, 2004         ($1,000,000)
                   September 30, 2004 and thereafter                 ($750,000)"

     5. All representations,  warranties,  promises,  covenants, or undertakings
expressly  or  impliedly  made by the Company in the Loan  Agreement  are hereby
expressly ratified and confirmed as of the date hereof.

     6. Except to the extent expressly modified by this Agreement, all terms and
conditions of the Loan Agreement shall remain in full force and effect,  and the
Bank reserves unto itself all rights and privileges granted thereunder.

     7. Company  agrees to pay all expenses  incurred by the Bank in  connection
with this  Amendment,  including  but not  limited  to the  costs of the  Bank's
outside legal counsel.

     8. Company hereby waives,  discharges,  and forever  releases Bank,  Bank's
employees, officers, directors, attorneys, stockholders, successors and assigns,
from and of any and all claims, causes of action, allegations or assertions that
Company  has or may have had at any time up through  and  including  the date of
this First  Amendment to Loan  Agreement,  against any or all of the  foregoing,
regardless  of  whether  any such  claims,  causes  of  action,  allegations  or
assertions  are known to Company or whether any such  claims,  causes of action,
allegations  or assertions  arose as a result of Bank's  actions or omissions in
connection with the Loan Agreement, any amendments, extensions, or modifications
thereto, or Bank's administration of the Indebtedness.

     9. This Amendment  shall be effective upon execution  hereof by Company and
Bank and  execution  by Tecstar  Manufacturing  Canada  Limited of the  attached
Acknowledgment.

     IN WITNESS  WHEREOF,  the parties hereto have executed this FIRST AMENDMENT
TO LOAN AGREEMENT as of the day and year first above written.


                                COMERICA BANK



                                By: /s/ Michael H. Cliff
                                   ---------------------------------------------

                                Its: Vice President
                                    --------------------------------------------



                                TECSTAR, LLC



                                By: /s/ Michael H. Schoeffler
                                   ---------------------------------------------

                                Its: President and Chief Operating Officer
                                    --------------------------------------------


                                 ACKNOWLEDGMENT


     The undersigned executed and delivered to the Bank a Guarantee dated August
1, 2003. The undersigned  acknowledges the foregoing Amendment and confirms that
its obligations  under the Guarantee  remain in full force and effect subject to
no defense, setoff or counterclaim.


                                TECSTAR MANUFACTURING
                                CANADA LIMITED


                                By: /s/ Michael H. Schoeffler
                                   ---------------------------------------------

                                Its: President and Chief Operating Officer
                                    --------------------------------------------