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In Reply to: RE: Aluminum plate thickness for amp project posted by gilmorneau on June 04, 2015 at 18:04:39
For some of the larger cutouts, I'd also suggest a circle cutter (I linked one just for the picture - no experience with the brand or seller). I've had good luck with step drills, but my experience with hole saws has been somewhat mixed. The circle cutter has been great for the holes beyond the step drill's range, and produces smooth-edged holes that require very little filing.
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I have been using this type of hole saw for awhile, they are a bit more expensive but you may find it on ebay from time to time. It makes super nice clean cut.
they are mostly come from sellers from NW area, someone told me they were Boeing's surplus. With a bit of cutting oil, they cut aluminum plate like butter, I use a floor stand drill press.
you may find it in business/industrial section, used. New one is very expensive.
Wow, those are impressive!! Did not see any on those on eBay....
Very nice...I've not had the pleasure of using that style of hole saw. Definitely looks like it would do a great job.
One plus on the Circle Cutter is that it's adjustable, so, for occasional use, it's pretty cost effective.
+ much on this suggestion!
I've used exactly this tool (AKA a flycutter) for 35 years on wood, aluminum, and steel. Pretty much requires a drill press for safety's sake and precision. Make sure the piece you are cutting is well secured, take your time, wear protective gear, spin it slowly and don't force. It works very well.
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