"Nate Nagel" wrote in message
...
On 06/04/2010 09:22 PM, wrote:


yeah, if you have a drill bit that will drill through a decent tap... I
want some!


You can drill high speed steel with a solid carbide bit available at any
good machine shop supply.

They are very pricey however and also very fragile. You also can get high
speed steel bits that have carbide tips brazed on. Those tend tobreak also
but it is easier to extract the broken bits of carbide rather than having a
big chunk of broken drill in a broken tap.

--

Roger Shoaf

About the time I had mastered getting the toothpaste back in the tube, then
they come up with this striped stuff.