Exhibit 23.1 CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS We consent to the reference to our firm under the caption "Experts" and to the use of our reports noted below included in the Registration Statement (Form S-4) and related Prospectus of Precision Partners, Inc. for the registration of $100,000,000 of Senior Subordinated Notes due 2009: Company Period Date of Report ------- ------ -------------- Precision Partners, Inc. Year Ended December 31, March 27, 2000 1999 and the Period from September 9, 1998 (Inception) to December 31, 1998 Mid State Machine Nine month period ended January 19, 1999 Products September 30, 1998 General Automation, Inc. Period from January 1, 1999 March 10, 2000 to March 19, 1999 and Years Ended December 31, 1998 and 1997 Certified Fabricators, Inc. Period from November 1, March 10, 2000 and Calbrit Design, Inc. 1998 to March 19, 1999 and the Years Ended October 31, 1998 and 1997 Nationwide Precision Period from June 1, 1998 to February 25, 2000 Products Corp. March 19, 1999 Gillette Machine & Tool Period from March 1, 1999 March 10, 2000 Co., Inc. to August 31, 1999 /s/ Ernst & Young LLP March 23, 2000 Dallas, Texas