I always seem to have problems in the upper left area cutting through. I have gone through leveling the glowforge and this was cut right after I cleaned it. I know to check before I remove the pieces, but I thought it was just masking that was holding these pieces in. The other 4 pieces came out.
In the past I have used a palm sander to sand down to the cut, but this is proofgrade plywood and I will get down to the “other” grain. I won’t be painting this.