The number of drills and reamers for diameter from 1 to 20.. The more detailed, the better
At 12 of the diameter of the drill, the 600. reamer is 2. The others you push, the reamer must be 500 slow, the hole surface quality is not good
With 45# steel as standard, the speed of drill is 450/S, the feed is F250, and the reamer is 500/S
Silly sister asked brother not on the list?
