Die Clearance Calculator

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This free online calculator determines die clearance according to a proprietary database containing over 2000 clearance tests. Each test result was recorded and a mathematical model was created. Use it to calculate die clearance required for perforating metals, plastics, and more. For more information, please read Proper Die Clearance.

Step 1. Enter information about the stock you are punching in rows A, B, and C below. Enter information about your punch in row D.
C. Stock Thickness