Hardest drill bit material

[herm0016]

i took the time to write that, so thought i should post it.

also, you responded first. so 😛

Very good response for a 10+ year old thread though lol

 

[sdifox]

I need to upgrade drill bits. Some of my cheap ryobi bits are bent and wobbly. I am using a drill press to drill hundreds of precise holes in copper and pvc pipe. I also drill through stainless. Is carbide overkill ? I don't mind getting the hardest, non bending bit so my holes are precise. Or cobalt ? I don't mind spending the money for very precise drilling - so I don't waste materials.

Tungsten Carbide drill bits plus oil.

 

[BoomerD]

No doubt, made from the usual Chinesium that fails with the first use.

 

[NutBucket]

#1 rule for drill bits, lube!

Second rule, American made.