runout

I decided to check the runout after boring out the upper part of the R8 spindle. The Morse taper arbor PM supplied had at most two ten-thousands runout. (See attached video) A 1/2" end mill shaft in the Interstate collet had about one thousands runout. I clamped a 1X2 board in the vise...

Hi all, just joined the forums, and I had a question for other Criterion boring head owners out there. I just picked up a Criterion DBL-203 3" boring head on eBay. It appeared to be in excellent condition, so I went for it, and when I put it in my mill, it looked a little off to me. So I got...