YAPH = Yet another Pen holder

I did not like the last one. Pens would stick and I wanted repeat ability if I wanted to swap pens.

http://www.youtube.com/watch?v=5IRyNxw6IUI

This holder works much better. IT uses 3/4" Square aluminum. You take two small rubber grommets, put them on a pen or marker and stuff them in the tube. The tube just slides in the V bearings.

In this test Im running a very low feed rate. I think 40 on the X and Y and 20 on the Z.