Joey's Router Compass

This is a jig you can bolt to a wood router so you can cut big (19") circles around a point . Use it to cut stool-tops, bending forms, whatever. You can anchor the jig with a pinch-bolt you drill into your workpiece and snug onto the jig through the "ruler" groove. I'd like to make a bearing I could use to make spinning around the anchor bolt a little less futzy...
I laser cut one of these out of 5mm tri-ply "wood" and dunked it in linseed oil. Its delicate but it works.