Most of mine is .125 (1/8) inches thick. Measure yours if precision is important. Ideally the cardboard should lie flat in the Glowforge's bed; the laser will focus based on that assumption. Avoid ...

This is a Post (https://cam.autodesk.com/hsmposts) for Fusion 360 and Autodesk HSM that produces SVG files from CAM operations that can be loaded intot he Glowforge ...