35307how to drill deep holes
- Feb 1, 2014
This is a spin off thread from one on reaming deep holes.
I suppose I could turn the shank down, turn an extension with an OD slightly smaller than the hole, and pin the two together. Never done it.
I know there are gun drills that can drill very straight holes of any depth but that is way beyond my tool set. It takes a lot more than just a different drill bit:
In some cases, it would be possible to mill a slot and then close up the top. Then you could get a boring bar in there to round it out.
What do others do?
- Next post in topic >>