Matt Meiser
01-02-2012, 2:43 PM
I got a set of Grizzly C2162 (http://www.grizzly.com/products/6-pc-Stile-Rail-Set-Quarter-Round-3-4-Bore/C2162) rail and stile cutters with my shaper. I'm probably going to want to use these to make some arched doors so I'll need a rub collar for them. Grizzly doesn't say what size rub collar I need. Am I correct in assuming I can calculate this as the overall diameter (2-5/8") minus 2 times the cutting width (3/8"). If I'm doing the math right, that would be 1-7/8"?