Summary

They sell these game buttons at Microcenter, they are the same as the Happ buttons on Amazon and eBay. I wanted an easy way to mount them above my workbench for testing projects. There are two versions with different shelf thickness, 19.5 mm and 15.86 mm, the hole is the same for both, 28 mm diameter.

PS the red line around the edge is there because the previous spool of filament I used was red. Sometimes I do not purge out the tail end of the previous color just to see how it will look. This time I think it looks really good.

There was room, so I put some text on the last couple.