Started a project tonight at about 1930 hours pacific time. With approximately 2 minutes left I noticed the laser was not working. Looking at the laser tube I noticed the coolant level was visible and not flowing. Powered off for safety reasons.
Reached my hand towards the coolant tank and touched my finger to the bottom of the inside (near the coolant tank); liquid was present.
Not sure what caused this. I’ve only ran a handful of projects in the last few months I’ve had the Glowforge. Interestingly enough, there were no heat warnings either.