I Feel like an idiot

[Rick Marchand]

Look up Bad Dog Tools... their bitsw will do it and won't break the bank. Great customer service.

here you go...

http://www.baddogtools.com/how-to2.html

 

[Rhinoknives1]

I run 1/16 carbide drills at like 4500 rpm, without coolant, and gentle pecking to clear chips if the hole is deep enough to warrant.

AlTin coated carbide is designed to be run dry, and carbide doesn't appreciate intermittent cooling, it's better for it to run hot.

Hmm? I never had any luck with those tin coated carbides. Maybe I wasn't running them fast enough?

 

[javand]

Hmm? I never had any luck with those tin coated carbides. Maybe I wasn't running them fast enough?

Big difference between TiN coated and AlTiN/TiNAl coating. Typically run that gold TiN coating with coolant, but the purple AlTin is a completely different beast. It's meant to run dry and hot.


Check it out, I think you'll be happy with it. I get some pretty amazing finish quality on my guard slots running tiny AlTiN coated cutters on my bridgeport at top spindle speed without coolant, just using air to blow chips, and feeding fast. (Talking 7/64 cutters, etc.) That being said, I don't really bother with coated drills, just end mills.