Centering Rings - DIY! Part 3

I always cut more than I'll need and use the best, finished pieces.

It's easier to stack the rings on the tube and sand them at once for a consistent size.

The ring edges were a little fuzzy. These mounts will also be removable.
I decided to harden up the edges with some medium CA glue.
The CA will seal the edges.
On a removable mount, these outside edges won't be glued into the tube. So a hard, smoother edge in this application is a good thing.

CA was applied with a Q-Tip and sanded smooth, still retaining a sliding, friction fit in the ST-16 tube.

Here's a good fit of the ring in the mainframe tube.
Certainly not as clean as a laser cut ring, but probably stronger. The framing mat cut rings are thicker than a typical ring supplied with a kit.