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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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What press force is needed ?
On Sat, 6 Feb 2010 05:54:14 +0000 (UTC), Andre Majorel
wrote: Thanks for the hint, Ned. How do you know what press force is needed for a given job ? Specifically, punching holes about 1 cm² in 1 mm steel or 3 mm aluminium. Force = sheared area x shear strength of the material x punch geometry fudge factor http://www.precisionsheetmetal.com/home/forces.htm -- Ned Simmons |
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