EXHIBIT 10.1

                       FIRST AMENDMENT TO CREDIT AGREEMENT

         THIS FIRST  AMENDMENT TO CREDIT  AGREEMENT,  dated August 6, 2002 (this
"Amendment"),   is  among  CASTING  TECHNOLOGY   COMPANY,   an  Indiana  general
partnership (the "Company"),  and BANK ONE, NA (successor by merger to Bank One,
Indiana,  National  Association),  a national banking association ("Bank One" or
"Bank").

                                  INTRODUCTION

         The  Company,  Bank One and Asahi  Bank Ltd.  were  parties to a Credit
Agreement  dated  August  26,  1999  (the  "Prior  Credit  Agreement").   Amcast
Industrial  Corporation,  an Ohio  corporation  ("Amcast"),  guaranteed  certain
obligations of the Company to Bank One under the Prior Credit Agreement pursuant
to an Amended and Restated Guaranty  Agreement -- Bank One dated August 26, 1999
(the "Prior Guaranty").

         Amcast, KeyBank National Association, as Agent (the "LIFO Agent") under
the  Last-In-First-Out  Credit  Agreement  dated as of June 5, 2001 (as amended,
restated or  modified  from time to time,  the "LIFO  Credit  Agreement")  among
Amcast,  the LIFO  Agent and the  financial  institutions  listed on  Schedule 1
thereto  (together with their  successors and assigns,  collectively,  the "LIFO
Banks") and Bank One,  individually  and as agent for the banks who were parties
to the Prior Credit  Agreement,  entered into a Forbearance and Waiver Agreement
dated as of June 5, 2001 (the "Forbearance Agreement") under which Bank One: (i)
agreed to forbear  from  exercising  any rights or  remedies  as a result of the
occurrence  or existence of certain  defaults  (including,  without  limitation,
defaults under the Prior Credit  Agreement,  as the same from time to time might
be amended,  restated or otherwise  modified or replaced),  (ii) waived  certain
defaults  under the  Prior  Guaranty,  as the same  from  time to time  might be
amended or replaced,  and (iii) rescinded an acceleration notice given under the
Prior Credit  Agreement.  As contemplated by the Forbearance  Agreement,  Amcast
deposited  $1,050,000  in a deposit  account at Bank One for the benefit of Bank
One and pledged such account and such funds to Bank One to secure the obligation
of Amcast under the Prior Guaranty.

         Amcast was and continues to be the sole shareholder of Amcast Casting
Technologies, Inc., an Ohio corporation and one of the two parties in the
Company.  On June 12, 2001, Amcast acquired all of the outstanding stock in
Izumi, Inc., a Delaware corporation and the other partner in the Company.

         The Company and Bank One  subsequently  entered into a Credit Agreement
dated as of September 18, 2001 (the "Credit Agreement") which replaced the Prior
Credit Agreement. Amcast guaranteed the obligations of the Partnership under the
Credit Agreement  pursuant to the Second Amended and Restated Guaranty Agreement
- - Bank One dated  September  18,  2001,  which  amended and  restated  the Prior
Guaranty (the "Amcast Guaranty").




         Under the Credit  Agreement,  Bank One:  (i)  agreed to make  Revolving
Credit  Loans (as defined in the Credit  Agreement)  to the Company from time to
time up to an aggregate  maximum  principal  amount  outstanding  at any time of
$6,500,000,  and (ii) made a Term Loan (as defined in the Credit  Agreement)  to
the Company in the initial  principal amount of $8,856,000,  of which $5,856,000
in  principal  amount  is  outstanding  as of the date  hereof.  Unless  earlier
terminated as provided in the Credit  Agreement,  Bank One's  commitment to make
Revolving  Credit Loans  expires,  and all  outstanding  Revolving  Credit Loans
become due and payable,  on September 1, 2002.  The Term Loan is due and payable
on August 3, 2003.

         Amcast,  certain of its subsidiaries,  certain  financial  institutions
which have extended credit to Amcast (the  "Restructuring  Lenders") and KeyBank
National  Association,   as  Collateral  Agent,  entered  into  a  Restructuring
Agreement  dated as of July  15,  2002  (the  "Restructuring  Agreement")  which
provides,  among other things, that the Restructuring  Lenders will not exercise
any of their  respective  rights  or  remedies  under the  Restructuring  Lender
Documents (as defined in the  Restructuring  Agreement)  or applicable  law with
respect to the Subject  Noncompliance  Events (as  defined in the  Restructuring
Agreement)  during the  Restructuring  Period (as  defined in the  Restructuring
Agreement).  Amcast,  certain of its  subsidiaries,  the LIFO Banks and  KeyBank
National  Association,  as agent for the LIFO Banks,  also  entered  into a LIFO
Restructuring  Agreement  dated as of July 15,  2002  (the  "LIFO  Restructuring
Agreement" and, together with the Restructuring  Agreement,  the  "Restructuring
Agreements") which also provides,  among other things,  that the LIFO Banks will
not exercise any of their  respective  rights or remedies  under the LIFO Lender
Documents (as defined in the LIFO  Restructuring  Agreement)  or applicable  law
with  respect to the  Subject  Noncompliance  Events  during  the  Restructuring
Period.

         The Company  desires to amend the Credit  Agreement as provided in this
Amendment, and Bank One is willing so to amend the Credit Agreement.

         In  consideration of the premises and of the mutual  agreements  herein
contained, the Company and Bank One agree as follows:

1.       Amendment.  Upon the Company satisfying the conditions set forth in
Section 7, the Credit Agreement shall be amended as follows:

         (a) The  definition  of  "Borrowing  Base" in Section 1.1 of the Credit
Agreement shall be amended in its entirety to read as follows:

                  "Borrowing  Base"  means  at any time an  amount  which is the
          lesser of (a) the sum of (i) 85% of Eligible  Accounts,  plus (ii) 60%
          of Eligible Inventory, plus (iii) $2,000,000, or (b) $5,750,000.

         (b)  The  definition  of  "Commitment"  in  Section  1.1 of the  Credit
Agreement shall be amended in its entirety to read as follows:

                                       2



                  "Commitment"  means the  commitment  of Bank One to make Loans
          pursuant  to  Section  2.1,  in amounts  not  exceeding  in  aggregate
          principal amount outstanding at any time $11,606,000.

         (c) The definition of  "Termination  Date" in Section 1.1 of the Credit
Agreement shall be amended in its entirety to read as follows:

                  "Termination  Date" (of the revolver period) means the earlier
          to occur  of (a)  September  14,  2003,  or (b) the date as which  the
          Commitment shall be terminated pursuant to Section 6.2.

         (d) The definition of "Floating Rate Loan" in Section 1.1 of the Credit
Agreement shall be amended in its entirety to read as follows:

                  "Floating  Rate Loan" means any Loan which  bears  interest at
the Floating Rate plus 0.5%.

         (e) The  definition  of "LIBOR  Rate Loan in Section  1.1 of the Credit
Agreement shall be amended in its entirety to read as follows:

                  "LIBOR Rate Loan"  means any Loan which bears  interest at the
LIBOR Rate plus 275 basis points.

         (f) The  definition  of  "Maturity  Date" in Section  1.1 of the Credit
Agreement shall be amended in its entirety to read as follows:

                  "Maturity  Date"  means  the  maturity  date of the Term  Loan
         maintained under Section 2.1(b), which will be September 14, 2003.

         (g)  Section 5.2(d) of the Credit Agreement shall be amended in its
entirety to read as follows:

                  (d)  Net Worth.  Permit or suffer the Consolidated Net Worth
         of the Company and its
         subsidiaries from and after August 6, 2002 to be less than $19,000,000.

         2.  Refinancing  Commitment.  On or before July 31,  2003,  the Company
shall deliver to Bank One a fully executed and effective  commitment  letter, in
form and  substance  reasonably  satisfactory  to Bank  One,  from a  lender  or
syndicate of lenders  reasonably  acceptable to Bank One,  which shall  provide,
among other things,  for the  refinancing of all amounts  outstanding  under the
Credit Agreement.

         3.  Waiver of Certain  Noncompliance  Events.  Bank One hereby  waives,
effective  as of July 15,  2002:  (i) any  noncompliance  with  Section 7 of the
Amcast Guaranty which then or at any time thereafter  existed or may exist based
on the  occurrence or existence of any of the Subject  Noncompliance  Events (as
defined   in   the   Restructuring   Agreements)(collectively,   the

                                       3




"Guaranty Noncompliance  Events"),  and (ii) any noncompliance  with Section 6.1
(i) of the Credit Agreement based on any of the Guaranty Noncompliance Events.

         4. References to Credit Agreement. From and after the effective date of
this Amendment,  all references to the Credit  Agreement in the Credit Agreement
and  in any  other  agreements  or  documents  entered  into  pursuant  to or in
connection  with the Credit  Agreement  shall be deemed to be  references to the
Credit Agreement, as amended by this Amendment.

         5.  Representations and Warranties.  The Company hereby represents and
warrants to Bank One that, as of the date hereof:

                  (a) (i) The execution, delivery and performance by the Company
         of this Amendment and all agreements and documents  delivered  pursuant
         hereto have been duly  authorized by all necessary  partnership  action
         and do not and will not violate any applicable  law, rule,  regulation,
         order,  judgment or  injunction  presently  in effect or the  Company's
         partnership  agreement,  or will result in a breach of or  constitute a
         default under any material agreement,  lease or instrument to which the
         Company is a party or by which the Company or any of its properties may
         be  bound  or  affected;  (ii)  no  authorization,  consent,  approval,
         license,  exemption  or  filing  of a  registration  with any  court or
         governmental  department,  agency or  instrumentality  is  necessary in
         connection  with the valid  execution,  delivery or  performance by the
         Company of this Amendment and all  agreements  and documents  delivered
         pursuant to this Amendment; and (iii) this Amendment and all agreements
         and documents  delivered  pursuant to this Amendment by the Company are
         legal,  valid  and  binding  obligations  of the  Company,  enforceable
         against the Company in accordance with their respective terms.

                  (b)  After   giving   effect  to  this   Amendment:   (i)  the
         representations  and warranties of the Company  contained in Article IV
         of the Credit  Agreement  are true and correct on and as of the date of
         this  Amendment  with the same force and effect as if made on and as of
         such date,  and (ii) no Event of Default has occurred and is continuing
         or exists under the Credit Agreement as of the date of this Amendment.

         6.  Outstanding  Indebtedness.  The Company  acknowledges  and confirms
that: (i) the aggregate  principal  amount of all  outstanding  Revolving  Loans
under the Credit Agreement as of the date of this Amendment is $2,900,000,  (ii)
the  outstanding  principal  amount  of the  Term  Loan  as of the  date of this
Amendment is $5,856,000, (iii) such outstanding principal amounts, together with
all interest thereon and fees related  thereto,  are not subject to any defense,
counterclaim,  recoupment  or  offset  of  any  kind,  and  (iv)  the  Company's
obligations in respect of such Loans are absolute and unconditional.

         7.  Conditions  to  Effectiveness.  This  Amendment  shall  not  become
effective until Bank One has received the following  documents and the following
conditions  have  been  satisfied,   each  in  form  and  substance   reasonably
satisfactory to Bank One.

                                       4



                  (a) The  Company  shall  have  delivered  to  Bank  One a duly
         executed  Amended and Restated  Revolving  Credit Note in substantially
         the form attached hereto as Exhibit A-1;

                  (b) The  Company  shall  have  delivered  to  Bank  One a duly
         executed  Amended  and  Restated  Term Note in  substantially  the form
         attached hereto as Exhibit A-2;

                  (c) Amcast shall have  delivered  to Bank One a duly  executed
         Confirmation of Guaranty in  substantially  the form attached hereto as
         Exhibit B;

                  (d)  The representations and warranties set forth in Section 5
         of this Amendment shall be true and correct in all material respects;
         and

                  (e) The Company  shall have repaid to Bank One the amount,  if
         any,  by which  the  aggregate  principal  amount  of  Revolving  Loans
         outstanding under the Credit Agreement exceeds $5,750,000.

         8. No  Contest.  The  Company  agrees  that it shall  not  dispute  the
validity or enforceability of the Credit Agreement, the Term Note, the Revolving
Credit Note, the Security  Documents or any other agreement or document  entered
into pursuant to or in connection with any of the foregoing  (collectively,  the
"Loan Documents"); any of the Company's obligations under the Loan Documents; or
the validity,  enforceability or extent of any security interest or lien granted
to Bank One pursuant to any of the Loan Documents.

         9.  Miscellaneous.  Terms  defined in the Credit  Agreement and used in
this Amendment  without  definition shall have the respective  meanings given to
them in the Credit  Agreement.  Except as expressly  amended hereby,  the Credit
Agreement and all other Loan Documents hereto are ratified and confirmed by Bank
One and the Company and shall remain in full force and effect.

         10.  Counterparts.  This Amendment may be executed in any number of
counterparts, all of which taken together shall constitute one and the same
instrument, and any of the parties hereto may execute this Amendment by signing
any such counterparts.

         11. Expenses. The Company agrees to pay and save Bank One harmless from
liability  for all costs and  expenses  of Bank One  arising  in respect of this
Amendment,  including the reasonable fees and expenses of counsel to Bank One in
connection   with  preparing  and  reviewing  this  Amendment  and  any  related
agreements and documents.

         12.  Governing  Law. This  Amendment is a contract made under,  and the
rights  and  obligations  of the  parties  hereunder  shall be  governed  by and
construed in  accordance  with,  the laws of the State of Indiana  applicable to
contracts  made and to be performed  entirely with such state and without giving
effect to the choice law principles of such state.

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed and delivered as of the date first written above.

                                       5



                            CASTING TECHNOLOGY COMPANY

                            By:  AMCAST CASTING TECHNOLOGIES, INC.,
                                  its General Partner


                            By:  /s/ F. J. Drew
                               ---------------------------
                                 Name:  Francis J. Drew
                                 Title: Vice President

                             And IZUMI, INC.
                                  its General Partner


                            By:  /s/ F. J. Drew
                               ----------------------------
                                 Name:  Francis J. Drew
                                 Title: Vice President


                            BANK ONE, NA


                            By:  /s/ Richard Babcock
                               ---------------------------
                                 Name:  Richard Babcock
                                 Title: First Vice President


                                       6



                                                                     EXHIBIT A-1
                                                                     -----------

                  AMENDED AND RESTATED REVOLVING CREDIT NOTE
                  ------------------------------------------

$5,750,000                                                        August 6, 2002
                                                           Indianapolis, Indiana

         FOR VALUE  RECEIVED,  CASTING  TECHNOLOGY  COMPANY,  an Indiana general
partnership  (the  "Company"),  promises to pay to the order of BANK ONE, NA (as
successor  by merger to Bank One,  Indiana,  National  Association),  a national
banking  association  (the "Bank"),  at its principal  banking  office in lawful
money of the United States of America and in immediately  available  funds,  the
principal sum of FIVE MILLION SEVEN HUNDRED FIFTY DOLLARS ($5,750,000),  or such
lesser  amount  as is  recorded  in the books and  records  of the Bank,  on the
Termination  Date;  and to pay interest on the unpaid  principal  balance hereof
from time to time outstanding,  in like money and funds, for the period from the
date hereof until the Revolving  Credit Loans evidenced  hereby shall be paid in
full, at the rates per annum and on the dates  provided in the Credit  Agreement
referred to below.

         The Bank is  authorized  by the  Company  to  record  in its  books and
records the date, amount and type of each Revolving Credit Loan, the duration of
the  related  Interest  Period,  the  amount of each  payment or  prepayment  of
principal thereon, and the other information  provided for therein,  which books
and  records  shall  constitute  prima  facia  evidence  of the  information  so
recorded;  provided,  however,  that any  failure by the Bank to record any such
information  shall not  relieve  the  Company  of its  obligations  to repay the
outstanding principal amount of the Revolving Credit Loans, all accrued interest
thereon,  and any amount  payable with respect  thereto in  accordance  with the
terms of this Revolving Credit Note and the Credit Agreement.

         The  Company and each  endorser  or  guarantor  hereof  waives  demand,
presentment,  protest, diligence, notice of dishonor, and any other formality in
connection with this Revolving Credit Note. Should the indebtedness evidenced by
this Revolving Credit Note or any part thereof be collected in any proceeding or
be placed in the hands of attorneys for  collection,  the Company agrees to pay,
in addition to the  principal,  interest and other sums due and payable  hereon,
all costs of collecting this Revolving  Credit Note,  including  attorneys' fees
and expenses.

         This Revolving Credit Note evidences one or more Revolving Credit Loans
made  under a Credit and  Intercreditor  Agreement  of August  26,  1999 and the
Credit Agreement dated September 18, 2001, as amended ("Credit  Agreement"),  to
which  reference is made for a statement of the  circumstances  under which this
Revolving  Credit Note is subject to prepayment and under which its due date may
be  accelerated  for a description  of the  collateral  securing this  Revolving
Credit Note.  Capitalized  terms used but not defined in this  Revolving  Credit
Note  shall  have  the  respective  meanings  assigned  to  them  in the  Credit
Agreement.

                                       7



         This Revolving  Credit Note is made under, and shall be governed by and
construed in  accordance  with,  the laws of the State of Indiana  applicable to
contracts made and to be performed  entirely within such State an without giving
effect to choice of law principles of such state.

                                   CASTING TECHNOLOGY COMPANY

                                   By:  AMCAST CASTING TECHNOLOGIES,
                                         INC.
                                         Its General Partner

                                   By:
                                      ---------------------------------
                                        Name:
                                        Title:

                                   And:  IZUMI, INC.
                                         Its General Partner


                                   By:
                                      ---------------------------------
                                        Name:
                                        Title:

                                       8



                                                                     EXHIBIT A-2
                                                                     -----------

                         AMENDED AND RESTATED TERM NOTE
                        -------------------------------
$5,856,000                                                        August 6, 2002
                                                           Indianapolis, Indiana

         FOR VALUE  RECEIVED,  CASTING  TECHNOLOGY  COMPANY,  an Indiana general
partnership (the "Company"), hereby promises to pay to the order of BANK ONE, NA
(as successor by merger to Bank One, Indiana, National Association),  a national
banking association (the "Bank"), at the principal banking office of the Bank in
lawful money of the United States of America and in immediately available funds,
the  principal sum of FIVE MILLION  EIGHT  HUNDRED  FIFTY- SIX THOUSAND  DOLLARS
($5,856,000),  payable in four quarterly  installments in the amount of $750,000
payable on the third day of each November, February, May, and August, commencing
on  November  3, 2002,  to and  including  the  Maturity  Date,  when the entire
outstanding principal balance of the Term Loan evidenced hereby, and all accrued
interest  thereon,  shall be due and payable;  and to pay interest on the unpaid
principal balance hereof from time to time outstanding, in like money and funds,
for the period from the date hereof  until such Term Loan shall be paid in full,
at the rate per annum and on the dates provided in the Credit Agreement referred
to below.

         The  Company and each  endorser  or  guarantor  hereof  waives  demand,
presentment,  protest,  diligence, notice of dishonor and any other formality in
connection with this Term Note.  Should the indebtedness  evidenced by this Term
Note or any part  thereof be  collected  in any  proceeding  or be placed in the
hands of attorneys for collection, the Company agrees to pay, in addition to the
principal,  interest  and  other  sums  due and  payable  hereon,  all  costs of
collecting this Term Note, including attorneys' fees and expenses.

         This Amended and Restated  Term Note amends and restates an Amended and
Restated Term Note dated  September 18, 2001 (which  amended and restated a Term
Note  dated  July 28,  1995) and  evidences  a Term Loan made under a Credit and
Intercreditor  Agreement  dated  August,  1999 and the  Credit  Agreement  dated
September 18, 2001 as amended (as amended,  the "Credit  Agreement"),  among the
Company  and Bank  One and to which  reference  is made for a  statement  of the
circumstances  under  which this Term Note is subject  to  prepayment  and under
which its due date may be  accelerated  and for a description  of the collateral
and security securing this Term Note.  Capitalized terms used but not defined in
this Amended and Restated Term Note shall have the respective  meanings assigned
to them in the Credit Agreement.

         This  Amended  and  Restated  Term  Note is made  under,  and  shall be
governed by and construed in accordance  with,  the laws of the State of Indiana
applicable to contracts made and to be performed  entirely within such State and
without giving effect to the choice of law principles of such State.

                                       9





                                   CASTING TECHNOLOGY COMPANY

                                   By: AMCAST CASTING TECHNOLOGIES, INC.
                                        Its General Partner


                                   By:_________________________________
                                         Name:
                                         Title:

                                   And

                                   By: IZUMI, INC.
                                        Its General Partner


                                   By:_________________________________
                                        Name:
                                        Title:





                                                                     EXHIBIT B
                                                                     ---------
                            CONFIRMATION OF GUARANTY
                            ------------------------

         THIS  CONFIRMATION  OF  GUARANTY  dated  as of  August  6,  2002  (this
"Confirmation"),  is made by Amcast Industrial Corporation,  an Ohio corporation
("Guarantor"),  in favor of BANK ONE,  NA (as  successor  by merger to Bank One,
Indiana National Association) ("Bank One").

                                  INTRODUCTION
                                  ------------

         Casting  Technology   Company,  an  Indiana  general  partnership  (the
"Company"), entered into a Credit Agreement dated September 18, 2001, as amended
(the "Credit Agreement"), with Bank One.

         Guarantor entered into a Second Amended and Restated Guaranty Agreement
- - Bank One,  dated as of September 18, 2001 (the  "Guaranty"),  in favor of Bank
One pursuant to which Guarantor guaranteed,  among other things,  payment of the
obligations  of the  Company to Bank One under the Credit  Agreement.  Guarantor
deposited  $1,050,000  in a deposit  account at Bank One for the benefit of Bank
One (the  "Account")  pursuant to an Assignment  of Deposits (the  "Assignment")
dated as of September  18, 2001 to secure the  obligations  of Guarantor to Bank
One under the Guaranty.

                                       10



         The Company and Bank One have entered into a First  Amendment to Credit
Agreement  of even date  herewith  (the "First  Amendment"),  pursuant to which,
among  other  things,  Bank One has  agreed to extend the  Termination  Date (as
defined in the Credit  Agreement)  with respect to revolving  loans and the term
loan made by Bank One to the Company under the Credit Agreement.

         Guarantor  wishes  to  confirm  to Bank One its  obligations  under the
Guaranty.

         In  consideration of the premises and of the mutual  agreements  herein
contained, the parties agree as follows:

         1.  Confirmation.  Guarantor hereby confirms to Bank One the continuing
effect of the Guaranty, as a guaranty of the Guaranteed Obligations
(as defined in the Guaranty).

         2.  Assignment of Deposits.  Guarantor  hereby confirms to Bank One the
continuing  effect of the  Assignment  and  acknowledges  and confirms  that the
security  interest in the Account granted to Bank One pursuant to the Assignment
continues to secure the obligations of Guarantor to Bank One under the Guaranty.

         3. References to the Credit Agreement.  From and after the date of this
Confirmation, references to the Credit Agreement in the Guaranty, the Assignment
and all other documents  executed pursuant to the Guaranty shall be deemed to be
references to the Credit Agreement as amended by the First Amendment.

         4.  Representations  and Warranties.  Guarantor  hereby  represents and
warrants to Bank One that the  representations  and  warranties of Guarantor set
forth in Section 5 of the  Guaranty  are true and  correct as of the date hereof
with the same effect as if made on that date. The Guaranty remains in full force
and effect.

         5.  Counterparts.  This Confirmation may be executed in any number of
counterparts, all of which taken together shall constitute one and the same
instrument, and any of the parties hereto may execute this Confirmation by
signing any such counterpart.

         6. Governing Law. This  Confirmation is made under,  and the rights and
obligations  of the parties  hereunder,  shall be governed by and  construed  in
accordance  with the laws of the State of Indiana  applicable to contracts  made
and to be performed  entirely within such state and without giving effect to the
choice law principles of such state.

         IN WITNESS WHEREOF, the parties hereto have caused this Confirmation to
be duly executed and delivered as of the date first written above.

                                  AMCAST INDUSTRIAL CORPORATION


                                  By:
                                      ---------------------------------------
                                       Name:
                                       Title:


                                  BANK ONE, NA


                                  By:
                                      ---------------------------------------
                                       Name:
                                       Title:

                                       11