EXHIBIT 4

                                October 12, 2001



Atchison Casting Corporation
400 South 4th Street
Atchison, Kansas  66002-0188
Attention:  Chief Financial Officer


     Re:  Atchison Casting Corporation (the "Company") April 3, 1998 Amended and
          Restated Credit  Agreement by and among the Company,  Harris Trust and
          Savings  Bank,  as Agent and the Banks party  thereto  (as  heretofore
          amended, the "Credit Agreement")

Ladies and Gentlemen:

     Pursuant to the Eleventh  Amendment and  Forbearance  Agreement dated as of
September  12, 2001 (as amended by that certain side letter dated  September 20,
2001, the "Eleventh  Amendment")  the Bank Group agreed to  temporarily  forbear
from  enforcing  its rights and remedies  with  respect to the Credit  Agreement
through October 12, 2001 (the  "Standstill  Expiration  Date").  The Company has
requested  that the Bank Group  extend the  Standstill  Expiration  Date through
November 2, 2001.

     Accordingly,  effective  upon the  execution of this letter by the Required
Banks,  the Company and each  Guarantor in the spaces  provided for that purpose
below (which  execution may be on separate  counterparts of this letter,  all of
which are to constitute one and the same instrument),  (i) the Standstill Period
shall be extended so that the new Standstill  Expiration  Date shall be November
2, 2001, (ii) Section 11(h) of the Eleventh Amendment is amended by deleting the
date  "October 12, 2001"  appearing  therein and inserting in its place the date
"November 2, 2001" and (iii) Section 18 of the Eleventh  Amendment is amended by
deleting  the date  "October 17, 2001"  appearing  therein and  inserting in its
place the date "November 7, 2001." Except as specifically  waived hereby, all of
the terms and conditions of the Credit  Agreement shall remain in full force and
effect and are deemed to be reaffirmed as of the date hereof.  Without  limiting
the  generality  of the  foregoing,  this letter does not waive any of the other
Defaults or Events of Default that now exist.





     All defined  terms used herein and not defined  herein  shall have the same
meaning  herein as in the Tenth  Amendment.  This waiver  shall be governed  and
construed in accordance with the laws of the State of Illinois.  All capitalized
terms used herein without  definition shall have the same meaning herein as such
terms have in the Credit Agreement.

                                Very truly yours,

                                HARRIS TRUST AND SAVINGS BANK, in its individual
                                  capacity as a Bank and as Agent


                                By:  /s/ Neal Golub
                                Title:  Vice President


                                COMMERCE BANK, N.A.


                                By: /s/ Dennis R. Block
                                Title:  Senior Vice President


                                FIRSTAR BANK MIDWEST, N.A.
                                (f/k/a Mercantile Bank)


                                By:________________________________________
                                Title:_____________________________________


                                KEY BANK NATIONAL ASSOCIATION


                                By:  /s/ G. M. Adams
                                Title:  Vice President

                                COMERICA BANK


                                By: /s/ Andrew R. Craig
                                Title:  Vice President







                                 HIBERNIA NATIONAL BANK


                                 By:_______________________________________
                                 Title:____________________________________


                                 NATIONAL WESTMINSTER BANK PLC

                                 Nassau Branch


                                 By:  /s/ Peter Ballard
                                 Title:  Head of Mid Corporate Team
                                         Corporate Restructuring Unit

                                 New York Branch

                                 By:  /s/ Peter Ballard
                                 Title:  Head of Mid Corporate Team
                                         Corporate Restructuring Unit


                                  WELLS FARGO BANK, NATIONAL
                                    ASSOCIATION (successor by merger to Norwest
                                    Bank Minnesota, N.A.)


                                  By:  /s/ Calvin R. Emerson
                                  Title:  Vice President

Agreed and Accepted:

ATCHISON CASTING CORPORATION


By:  /s/ Kevin T. McDermed
Title:  Vice President & Treasurer







AMITE FOUNDRY AND MACHINE, INC.
PROSPECT FOUNDRY, INC.
QUAKER ALLOY, INC.
CANADIAN STEEL FOUNDRIES, LTD.
3210863 CANADA INC.
KRAMER INTERNATIONAL, INC.
EMPIRE STEEL CASTINGS, INC.
LAGRANGE FOUNDRY INC.
THE G&C FOUNDRY COMPANY
LOS ANGELES DIE CASTING INC.
CASTCAN STEEL LTD.
CANADA ALLOY CASTINGS, LTD.
PENNSYLVANIA STEEL FOUNDRY & MACHINE COMPANY
JAHN FOUNDRY CORP.
INVERNESS CASTINGS GROUP, INC.
DU-WEL PRODUCTS, INC.
DAVIS CASTING AND ASSEMBLY, INC.
CLAREMONT FOUNDRY, INC.
LONDON PRECISION MACHINE & TOOL LTD.


By:  /s/ Kevin T. McDermed
Title: Vice President




GILMORE INDUSTRIES, INC.


By: /s/ John R. Kujawa
Title:  President