The top of the honeycomb tray is about 1.35" from the bottom of the Glowforge. The top surface of your material must be at least 1.35" from the floor or it is out of range. I suggest you read through some of the threads about using the Glowforge without the honeycomb tray and print out the no math tool. Also, don’t eat engraved food from your Glowforge unless you only use it for food.