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help with hole saw
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spystyle:
I've used both a Greenlee 1 1/4" punch and hole saws, the punch does make a cleaner hole, but no cleaner than a hole saw with a quick polish from a die grinder (dremmel)

Button holes don't have to be too clean anyway as they are covered up by the button's plastic edge.

The punch is more expensive, no faster (if using hand tools),  still requires lubrication, more labor intensive (if using hand tools) and can't double like a hole saw can (ie: the hole saw is good for wood panels and metal panels)

A Froogle search for 1 1/8" Knockout punch turned up 1 used @ $35.00 (www.goantiques.com) and a new ones @ $41.00 (www.newark.com)

Whereas a 1 1/8" bi-metal hole saw can be found for $3.34 and the arbor $5.08 (MK Morse brand @ www.toolup.com)

Although the hole saw requires a variable speed drill with a side handle (variable speed to drill slowly, and a side handle to  stabilize) the cheapest Froogle turned up was $29.99 (@ www.harborfreight.com, pictured below)

These are things to keep in mind
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