krash wrote:well Forstner bits look like the way to go... however I can't find any that are reccommended for aluminum. So what's the requirement to get Forstner bits that will drill aluminum? I suspect some titanium bit?
How long (how many cuts in alu) does a Forstner bit last drilling noval 7/8" holes?
Thx--
Get a good aluminum tapping solution. Tap Magic is the one I remember. McMaster/Carr I'm sure has it or an equal. This will greatly increase the life of the bits. As to how long is anybody's guess. Oh, and be sure to drill a (very tight) pilot hole. The forstner drill tips are for alignment in wood, not cutting aluminum.
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