- Joined
- May 7, 2014
- Messages
- 776
I need to get an 11.5mm hole into 6061 about 1.2 inches deep then ream to 12mm. Wondering how folks may do this large main hole.
I've seen how my machine acts with a large bore hole on a cnc run. I always setup peck and full extract, with a short dwell.,but even at .375 it does squeal and groan. Slow and careful required. An 11.5mm hole is pretty good size.
Do the smaller machine machinists setup> a few step drill sizes going up over 3 or 4 CNC runs? Or just do the full 11.5, flood, and set the plunge rate, peck depth, etc...
Still having a ball learning!
thanks,
J
I've seen how my machine acts with a large bore hole on a cnc run. I always setup peck and full extract, with a short dwell.,but even at .375 it does squeal and groan. Slow and careful required. An 11.5mm hole is pretty good size.
Do the smaller machine machinists setup> a few step drill sizes going up over 3 or 4 CNC runs? Or just do the full 11.5, flood, and set the plunge rate, peck depth, etc...
Still having a ball learning!
thanks,
J