pmtool
Cast Iron
- Joined
- Jul 10, 2011
- Location
- Portland, OR
I have occasionally want to put deep holes 2" or 2.5" diameter though round work pieces 6 to 10 inches deep. I am thinking of making a tooling block to go in the place of my Aloris post that would hold a big spade drill and plumb it with an extra coolant pump I have.
Machine is a old Pratt and Whitney model c with a 7.5 hp motor. Pretty big and rigid for its size. (16 by 36) I want to power feed it.
This is just roughing work. I would like to have this drilling while I do something else.
Anyone have a setup like this? Based on my calculations 2.5 inches diameter may be a bit optimistic. Even 1.75 would be a good start.
Typically mild or alloy steels (1018, 8620, 4140)
Are modern insert drills more efficient horsepower wise than spades?
Machine is a old Pratt and Whitney model c with a 7.5 hp motor. Pretty big and rigid for its size. (16 by 36) I want to power feed it.
This is just roughing work. I would like to have this drilling while I do something else.
Anyone have a setup like this? Based on my calculations 2.5 inches diameter may be a bit optimistic. Even 1.75 would be a good start.
Typically mild or alloy steels (1018, 8620, 4140)
Are modern insert drills more efficient horsepower wise than spades?