Hi James. Thanks for the tip. I wanted to give the ruler a try – but my Glowforge is now completely stuck in ‘calibrating’ mode. I have tried to restart it many times. Sometimes it seems to work (head moves into position with ease) and I can start a print. But then it fails immediately as the head freezes. Tried a simple task like cutting a circle, but again it stopped (one time it made it all the way around, but didn’t cut through (PG draftboard), and the head still froze right above the print.) So far all my designs have worked flawlesly. I found a similar thread where the problem is only resolved by replacing the GF…