I recently picked up the RC-1075 shank and one of these quad chamfering bits to add a touch of polish to some of the acrylic we've been cutting. Unfortunately, the documentation is a bit sparse, even erroneous in places. If anyone has used this rig, (or anything like it - see image below) I would appreciate any tips or info that you've gleaned from your experience.

Of particular interest:
  1. How do I determine the offset for the path? (I see no indication of the inner radius of the cut.)
  2. Can this bit handle plunge and cut into .177" acrylic (like the documentation suggests) or should it just follow a finishing pass?



Thanks!

RC-1075+RCK432.jpg