I’ve ordered these before but wanted to try making my own, just to see how it works. Seemed like a good time since I needed them for my kid’s school stuff. Had to scrub them pretty good with toothbrush and toothpaste (no specific reason for toothpaste other than it was there and I thought the grit would be helpful).
Settings were: 700/80 225 single, focus set to .47 even though it measured .27
Here’s the file for the little holder thing: