View Single Post
  #3   Report Post  
Posted to rec.crafts.metalworking
Jim Wilkins Jim Wilkins is offline
external usenet poster
 
Posts: 3,146
Default Drilling hard material

On Jul 26, 8:25*am, Todd Rich wrote:
I've got some 1095/15n20 damascus steel I'm working on and while it grinds
ok, I'm having trouble drilling it. *I used a cobalt drill and a carbide
center cutting end mill and neither one seems to be doing a good job. *
Even after I took the end I need to drill up to a dull red heat.

Any suggestions?


Are they dulling quickly or just not penetrating the metal? I've had
decent results with a HiRoc drill.