Milling holes in Aluminum

[ViperTX]

DaraBee....was actually thinking of steel....I suspect with a center cutting end mill there shouldn't be any problem.

The CNC drill bits are used in screw machines....not sure about the actual RPM

[DareBee]

I suppose we all could have different mental pictures as well.
This could be a 2" deep blind hole or a through hole in 1/8" stock.
Walter never did clarify this or what sort of machine he is running - eh Walter

[walter]

Sorry guys, I did not mean to confuse you. Just monkeying with stuff in my garage and not feeling like browsing book for formulas- that usually kills the fun. You know how it goes, you need to mill something and no milling machine within miles. Or you want to drill stuff but spindle on your machine does 45000 rpm min, you know, the usual garage fun

A lot of people here are total pros, I`m proud to be member of this forum. But there are also some hobbysts, enthusiasts and maybe even maniacs, it`s great to see all this crowd together. I think I fit well here.

So basically, I just needed some newbie info. Like: "when drilling holes in aluminum try to keep your RPM below 45000...."

I guess there are multiple technics to do this, deep blind hole would be different than shallow through, etc. Either way it`s great to see here info on technics and tools from pros who know their stuff. Any hobbyst or enthisiast will benefit from good reading here, not just me. Thanks for all the input, and keep up the good work!

[DareBee]

Walter

How about - 1/4" HSS drill run 3,000 RPM at 18 IPM
You got a fixed 45,000 RPM spindle you are SOL ol'boy
Take off the router and mount a hand drill in its place.

[walter]

Will do.

Thanks DareBee