I’m sorry you ran into trouble, but thanks for letting us know about this. The details are very helpful. I’ve let the team know that the “Cooling Down” message didn’t appear for you when your unit paused to cool, nor did the button light up. We’ll look into that. As for your print, I’m so sorry it didn’t turn out beautifully. Opening the lid before a print is finished will automatically cancel it.
Your Glowforge Pro features a closed-loop liquid cooling system that uses the air from the room to remove heat. It’s boosted by a solid-state thermoelectric cooler that allows for heavier use at higher ambient temperatures than the Basic. It is designed to print in an operating environment between 60 degrees Fahrenheit (16 Celsius) and 81 degrees Fahrenheit (27 Celsius). Printing outside these ranges may cause your unit to pause before starting, or to pause periodically during the print for cooling. This isn’t harmful, but it can make your print take a little longer.
You can try any of these things to improve warm-weather performance:
Try printing with no material on the bed (so as not to generate smoke and fumes) and no exhaust hose attached. If this works, then the problem may be that your exhaust hose is constricting the flow of air out of the unit, preventing cooling.
Examine the bottom-right side of your Glowforge. There are air intake vents, and if they become obstructed, it could make cooling less effective.
Try pointing a fan at the right side of your Glowforge. If there is warm air around the intake, this could help it cool off.
Power off your Glowforge and allow it to cool, then power it on and print immediately. When it sits idle, the fans are off, so heat can build up.
Just wait. Your print may take a little longer when it’s warm, but your Glowforge will protect itself and make sure it cools enough to prevent any loss of power or damage. And it’s clever enough to pick up from exactly where it left off, even if it loses Wi-Fi during the print!
One more thing: if you are venting outdoors, ensure that changing conditions don’t cause extreme temperatures or humidity to enter the Glowforge unit through the exhaust hose. Disconnect the hose from the outside air when the Glowforge is not in use. If you have been venting outdoors previously, i may help to turn your unit off and open the lid for a few minutes to allow any hot or humid air to dissipate before trying again.
I hope these suggestions help. It looks like you’ve been printing successfully since you opened this thread. Could you please let me know if you run into any other trouble?