"This is the best material test file I've found. I've bought a few and used the one generated in Lightburn but this one is the perfect size and scale. Easy to edit- just a great item."
Laser Cutting & Engraving Test Cards, Versions for 5w, 10w, 20w, 40w, 60w, 80w, 100w, 150w Lasers - Lightburn, xTool Calibration Test Files