Ender-3 Filament Waste Squeegee

thingiverse

After upgrading my Ender-3 to direct drive, I discovered the X axis had a bit more range on one side of the bed. Utilizing this extra space, I designed a waste tray and squeegee system that makes priming the nozzle quick and clean. No longer will you have to remove the excess plastic lines from the print bed after priming the nozzle. In order to use this setup, your X axis must have at least 248mm of range. You'll also need a piece of silicone for the squeegee component. I used a piece from an automotive detailing squeegee, but any piece that's around 2.75mm thick will work. The detailing squeegee I used can be found here: https://amzn.to/2tiy0A4 You'll also need to adjust the display's position to make space for the tray. I designed a simple mount to move the display over, which can be found here: https://www.thingiverse.com/thing:4048717 After installation, you can update your print starting gcode to clean the nozzle before printing. Currently, I'm using this gcode: M80 ; turn power on M73 P0 ; Reset print progress bar G21 ; metric values M117 Homing... G28 ; home M117 Cleaning nozzle... G92 E0 ; Reset Extruder G1 Z5.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed G1 X248 Y10 F3000.0 ; Move to start position G1 E20.8 F300.0 ; Extrude 20mm G1 E18.8 Z0 F500.0 ; Retract and lower G1 X230 Y10 F2000.0 ; Wipe G1 X248 Y10 F2000.0 ; Wipe G1 Z0 X200 Y10 F1500.0 ; M117 Leveling bed... M280 P0 S160 ; BLTouch alarm release G4 P100 ; delay for BLTouch G29 ; auto bed leveling M117 Cleaning nozzle... G92 E0 ; Reset Extruder G1 Z5.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed G1 X248 Y10 F3000.0 ; Move to start position G1 E20.8 F300.0 ; Extrude 20mm G1 E18.8 Z0 F500.0 ; Retract and lower G1 X230 Y10 F2000.0 ; Wipe G1 X248 Y10 F2000.0 ; Wipe G1 Z0 X200 Y10 F1500.0 ; M117 Printing...