correcting mill spindle runout

[cocoa_cnc]

Its an XJ20, I've had it for 2-3 months, and so far spent most of my time cleaning and adjusting it :)

[irving2008]

Its an XJ20, I've had it for 2-3 months, and so far spent most of my time cleaning and adjusting it :)

Personally if its only 2- 3 months old and you bought it new I'd get the vendor to deal with it - it shouldn't have a problem of that nature.

It could be a bit of dirt in the taper tho. What you could do is get some engineers blue and put a very fine coating on a taper then draw it into the spindle. Carefully drop it out again and see if there's any obvious marking where the blue has been rubbed off... 0.1mm is 4thou and you should be able to do better than 1/2 of that at least.

I'm assuming here that the tooling is pulled in by a drawbar? If so, how tight do you go?