What drill bit do I use for these harder metals

[atlatl55]

Yes, Im new at this and wanted to know what drill bits do I use with these harder metals?
What do I finish pourous wood with? Thanks

 

[SOLEIL]

Welcome to the forums.
Try asking your question here:
http://www.bladeforums.com/forums/forumdisplay.php?f=741
The members there will be able to give you some good advice.

 

[cutter17]

A cobolt or a carbide will do it, either one is more expensive than regular bits.

 

[johnny reb]

Carbide driil bits with lubricant. 3 in one will work, but a product called " Tool Saver" works better. I don`t know where to buy it, But it`s like a big tube of chapstick. Once you heat up a drill bit, It turns soft, and dulls quickly. Go slow, And keep it cool.

 

[rpttrsn]

IMO:
Colbolt drill bits should work better then High speed steel bits. I would stay away from solid carbide as they will chip easier then cobolt due to being harder. Carbide does not sharpen as well on a standard grinding wheel. Again much harder. The only time I have used solid carbide bits (not the masonary ones) is when the metal I have drilled has been hardened. Have drilled all types of stainless and other exotic metals with colbolt. They should cost about twice that of HSS. Use cutting fluid and keep the speed down. Start with a smaller hole first then increase to finished size. Good luck.