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Cutting holes in metal
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Fat_Trucker:
Hi

I need to cut some holes for buttons in a metal panel above my CP. Its about 3mm thick and I've dried drilling and a holesaw and nothing seems to be making any headway.

Is there a particular tool thats suitable for this?, as at the moment I'm rapidly blunting my cutting tools on it.

Cheers.
HaRuMaN:
I think what you are looking for is a bi-metal hole saw.  Either that or a Greenlee punch.  A regular hole saw just won't do.
Samstag:
You'll want to use a drill press for best results.  Otherwise you're going to need a very steady hand.
jcrouse:
This option may be slightly pricey.

John
nostrebor:
bi-metal hole saw is the easiest solution. You can cut them handheld as well because they have a pilot bit that guides the saw.
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