Thank you for reaching out to us. I’m sorry to hear your Glowforge is having trouble measuring the distance to your material.
I took a look a the logs from your unit and it looks as though the red dot has landed either very close to the edge of the material or completely off of the material on your recent prints.
Try running Set Focus again, place the focus area on the material, so it’s not near an edge. Then watch to make sure the red dot hits the material.
If the app displays the error message again, the next step would be to check that your carriage plate and printer head are both properly installed. If either one is not fully seated, it can cause the printer head camera not to measure distance accurately.
Below are instructions that will walk you through re-installing the carriage plate and checking the printer head installation. Once you have confirmed both parts are properly installed, try running another Set Focus print and let us know if the error continues.
Please let me know if you have any questions. Thank you!
Carriage Plate/Printer Head Installation
Turn off your Glowforge
Open the front door and carefully remove the crumb tray
Remove the printer head
- Holding only the finished black surfaces, grasp the printer head as shown. Pull gently up and back to disengage the magnets and remove the head.
- Push down fully on the wire ribbon tab to unplug the wire ribbon from the printer head. Pull the wire ribbon gently away and tuck it into the laser arm.
- Unhook the belt
- Remove the carriage plate
- Place both index fingers on the rear corners of the plate and both thumbs on top of the front wheels. Use your other fingers to support the plate. While keeping the laser arm stable with your thumbs, use your index fingers to pull the plate towards you as far as it will go. Then push down with your thumbs to tip the front of the plate down and towards the back of the Glowforge until the plate pops off of the laser arm.
- Re-attach the carriage plate
- Unwrap the belt and hold the carriage plate as shown
- Placing your index fingers on the back corners of the carriage plate and your thumbs on top of the front wheels, hook the rear wheels on the groove under the laser arm. The front wheels should be mostly visible.
Pull the plate forward against the springs until the front wheels clear the laser arm then angle the plate up until the wheels are in line with the rail. Release the plate – it should grasp the rail firmly.
Pick up the right side of the belt and make sure it is not twisted. The outside of the belt should be smooth and the inside should have ridges.
Hook the belt onto the pulley on the right side.
Make sure that the left side of the belt is not twisted and is smooth on the outside and ridged on the inside
Attach the belt on the left side
- Using your left hand, set the belt on the front half of the motor (the silver piece on the left-hand side below the laser arm) and support it with your fingers by placing them under the motor. The belt will not be fully on the motor. Use your left thumb and fingers to clamp the belt firmly in place and apply pressure.
Still holding the belt and motor firmly with your left hand, use the pressure from your left fingers to guide the belt clockwise around the pulley as your right hand slowly pushes the carriage plate to the left. The belt should roll onto the pulley until it is secure.
Once the belt is in place, be sure it is taut and does not sag. If it’s quite loose, please take a photo of the belt and send it to firstname.lastname@example.org.
- Prepare to Print
Gently slide the carriage plate back and forth on the laser arm to ensure that it travels smoothly. If it doesn’t, remove the plate and try again.
Replace the printer head and crumb tray according to these instructions
Turn your Glowforge back on.
Try a test print.
Let us know how it goes!