Thread: hole saw for metal ????
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05-05-2007 05:56 AM #5
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I've had good luck on sheet metal by drilling the pilot hole first with 1/4" bit.
I replace the bit in the hole saw with a solid 1/4" shaft. I used a old screw driver shank since it's hardened.
As for brand, I can't remember and I'm at work so I'll have to check later. I know they are the ones with the non-removable shank(mandrel). I don't think they're bimetal, but that's the only kind I can get locally.
The lowest speed on my drill press is 200 RPM and I've had good results on thick stuff at that speed(with lots of oil).Last edited by Hotrod46; 05-05-2007 at 06:25 AM.
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