Here’s a little ruler thing I made, with circles ranging from 0.2in to 0.545in diameter with 0.005in increments. Made it mostly to see what size cut so I can have dowels, findings, etc. would sit in the engrave or cut perfectly, because like a 1/4 in dowel actually may need a 0.255 or 0.265 inch diameter or something. You can also cut instead of etch if you are planning on pushing things through the material. Hope it’s helpful to y’all.
This is a way for me to see how circular findings fit into holes engraved by the Glowforge so I can just plug things in them until it fits and say “okay if I want to stick this specific brand of jewelry finding on to the back of draftboard / most other proofgrade woods it’ll fit snugly if I make a 0.435 inch diameter circle engrave in my file”, which is a lot faster than measuring with calipers and then doing math and making three test prints for each thing I want to stick into an engraved or cut slot.
If the goal was to actually create circles of those diameters then yeah I will definitely need to do kern compensation. Like idk subtract 0.006in or something from each diameter for proofgrade draftboard? I guess if someone really wanted that they can just take this file and edit it or something.
That’s how I looked at it. It doesn’t really matter what the real physical size is, just matters what I have to tell the software/GF it is so it fits. That’s a quick & easy thing without needing to mess around with messing around with the math & adjustments to make real physical measurement matches.