Any of you that love printing on glass because of the beautiful “Smooth as glass” surface will love printing on glass with your MK2.
This short video will show you how easy it is by adding a few lines of code to your start up script within your slicer. I would recommend going to you’re hardware store with the measurements of your print bed and have a couple pieces cut by someone familiar with cutting glass and even have them smooth the edges to help prevent cracking and the possibility of cutting yourself.
You’ll also need a few chip clips or some method to hold the glass securely to the hotbed.
Follow along by watching the short video below. The Gcode for your start up script can be copied from the text display below the video.
Note: You must accurately measure the thickness of your glass and change the value in the gcode before running the script.
Update: I have also checked the bed temp with a laser thermometer and the temp of the glass is about 7 degrees cooler than the hotbed so adjust accordingly for your environment.
Start up Script Gcode
M300 S1567 P240 M301 P22.18 I1.27 D96.74 ; PID Tuning for your printer, you can delete this line if not used G28 W ; home all without mesh bed level G80 ; mesh bed leveling G1 Y-3.0 F1000.0 ; go outside printing area G1 F600 Z+100 ; Raise the print nozzle out of the way G4 P30000 ; pause for 1 minute M300 S1567 P240 ; Play a Beep M117 One minute remaining ; One minute remaining warning G4 P30000 ; pause 1 more minute G1 Z2.3 ; consider glass thickness Measure your glass thickness first G92 Z0 ; Set absolute positioning for remaining print G1 X60.0 E9.0 F1000.0 ; intro line G1 X100.0 E12.5 F1000.0 ; intro line
Also worth mentioning, you can still run your live Z tuning once the print begins if you need to further tune your Z height.
You can also download my Updated Controller knob here that gives greater control of your display screen.