I know that a tone ring makes a great guide for this, but i don't have one, nor do i plan to buy one. What else could I use as a template for the bearing to ride on to route this block pot out?
You could draw a circle on a piece of plywood or particle board, using a compass or a piece of wood with two holes in it, and then cut it out and sand to the line, or you could make a circle jig for your router with an arm that extends out from the router base and a dowel for a pivot to cut a circle to use. Or if you can find a manufactured object like a bucket or a pot that's the right size you could use that.
They make low cost jigs for routers to cut circles of various sizes.
What Zach said. You’ll need to screw or somehow secure the rim to the template. I posted a picture of something similar in your earlier thread about this topic.
Edited by - Stephen45710 on 07/23/2019 15:51:53
since you now have a bandsaw, you can make a perfect 11" circle by clamping a piece of plywood onto the bandsaw table that has a pin exactly 5 1/2" from the blade. Drill a hole in the center of whatever you want to make the guide from and rotate it— you get a perfect 11" circle.
Edited by - Ken LeVan on 07/24/2019 08:18:06
I made a simple circle jig out of 1/4" plywood using a jigsaw. I set 2 mounting points for the inner radius and outer radius and then attached my router to it and in many passes cut a ring out a scrap of high quality plywood.
'TB-100 tone ring' 1 hr
'Banjo strap' 3 hrs