R8 Tapping Guide

[charles scozzari]

Made this using a 7/8" R8 end mill holder and a hand tap handle. Now I'm able to tap a predrilled hole up to 1/2" without removing the work from the mill clamps or vise. I had to turn the tap handle down, then made the ring and handle set, and pressed it on the R8 end mill holder. the handles pass through the ring and further secure the ring and tap holder to the tool. To use the tool I release the mill spindle lock and disengage (out position) spindle from the head and do the tapping manually while the part is still centered in the work. I prefer this method to tapping using the mill under power. Thanks for looking.