- Joined
- Apr 8, 2021
- Messages
- 138
Hello. I have to make a long hole on a copper block. 90mm long, and 6mm diameter. The last attemp ended with the dril bit broken into the block. Very nice (it was with a 4mm drill bit)
I think part of the problem was that I was using to many RPM. Although copper is soft, is very "sticky" so that could be part of the problem. cutting oil? cutting fluid? Any advice?
Thank you!
Best regards
I think part of the problem was that I was using to many RPM. Although copper is soft, is very "sticky" so that could be part of the problem. cutting oil? cutting fluid? Any advice?
Thank you!
Best regards