Mosaic
Well-Known Member
I had a benchtop press that developed enough runout to cause a 3.125" drill bit to make 3.4" holes in 3/8" AL plate
Turned out the dial gauge showed about 11 thou runout at the chuck before the 'fix'. Down to 3 thou after.
After the light hammer tapping based on the guide below I got the drill bit runout to be < 4 thou.
http://www.rvplane.com/pdf/drill_press_tune-up.pdf
Turned out the dial gauge showed about 11 thou runout at the chuck before the 'fix'. Down to 3 thou after.
After the light hammer tapping based on the guide below I got the drill bit runout to be < 4 thou.
http://www.rvplane.com/pdf/drill_press_tune-up.pdf