EXHIBIT 23.1 CONSENT OF INDEPENDENT AUDITORS We consent to the reference to our firm under the caption "Experts" and to the use of our report dated February 28, 1994 in Amendment No. 1 to the Registration Statement (Form S-4 No. 33-53009) and related Prospectus of Cincinnati Milacron Inc. for the registration of $115,000,000 of 8 3/8% Notes. ERNST & YOUNG Cincinnati, Ohio June 13, 1994