Keeps changing my thickness and I get and error

[geek2nurse]

The surface of your material needs to be within 0.5" of the laser head.

Here’s a post that might get you started. Search on “cutting without the tray” to find a whole bunch more.

Cutting Without the Crumb Tray - The NO MATH Edition

There’s a great tutorial here on cutting without the crumb tray when you want to work with thicker material. If you want to know the numbers and theory behind it, go read that first, and then come back. Thank you, @henryhbk! This method uses the digital calipers you should already have, and the not-used-often-enough ZERO button. We’re going to go through the steps from the tutorial above, but without any math or writing down numbers. The first step is to find the height of your crumb tray’s su…