Glowforge Basic/Plus/Pro
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Turn off and unplug your Glowforge
Turn off your Glowforge, unplug it, and open the front door. Carefully remove the crumb tray. -
Locate the laser arm pulley
Without removing the carriage plate and belt, locate the black pulley fastened by a metal screw on the right end of the laser arm.
Image: The pulley on the right side of the laser arm. The crumb tray has been removed. -
Insert the hex key into the pulley
Insert the short side of the 3mm hex L-key into the metal screw with the long handle pointing toward the front of the unit.
Image: The hex key is in the pulley ready to loosen the screw -
Loosen the pulley
Turn the key clockwise to loosen the screw until the pulley can slide with some friction. Don’t remove the key from the screw. -
Slide the pulley to the right
Holding the key with your one hand, position your other hand to push the pulley to the right until the belt is fully extended.Image: One hand holds the pulley in place, while the other holds the hex key. -
Tighten the pulley
While keeping tension with your other hand, turn the hex key counter-clockwise to tighten the screw in the pulley. -
Check the belt tension
When pressing lightly on one side of the belt, the other side should not move. It may take a few tries to get the belt tension correct. If the belt has too much slack, loosen the pulley and try again. -
Try a test print.
When you are satisfied with the tension on the belt, plug in your Glowforge, turn it on, and try a test print.
If you have any trouble, please reach out to our team and we'll be happy to help!