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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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3 Jaw offset for cams
If you place a plate of thickness, t, between one jaw of a 3-jaw chuck and
now bore a hole, what is the offset of that hole from the center of the original rod (diameter, D). One source says it is 2/3 of t. This might be = 1 / (1 + cos 60 deg) but I failed to derive this with trig. Anyone know how to derive this mathematically? Anyone know if this is true? thanks -- - - - - - - - - - - - - - - - - Bill Graves RKBA! |
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