[Ch_Irawan]

Hi all.

I bought a cheap benchtop milling machine and then found out that the spindle runout is more than 0.1 mm at the internal taper hole of the spindle, bad luck of me! Checking the bearing looks good, re-adjusting the preload nut didn’t help, now I think the taper hole itself is out of center.

Thinking to re-grind the taper hole, here’s the plan attached.

I’m not a good machinist, need some advice from the wiz here.. Will it work? Any input appreciated.