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Automatic nozzle cleaning (Prusa Mini)
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Let the hotend poop to stick-clean the nozzle.
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Updated at source:
Model information
- Source
- Printables
- Category
- Test Models
- License
- Creative Commons — Attribution
Alternative way how to clean the nozzle (in 30s)
This method uses the stickiness of filament to catch stuck filament from the nozzle exterior.
- Prints small disc (as in 3mf file)
- Extrude 25mm of filament with nozzle 0.5mm from the bed.
- Retract 5mm
- Wait for blob to cool off to 180°C
- Pull hotend up, leaving plastic down
- done!
This was tested for PLA, but it should be fine also for PETG filament. It could clean PETG from nozzle pretty well (need to be tested).
How to use - options
- recommended: get 3mf project and slice it youself - check if there are custom Gcodes under Printer Settings/End G-code
- OR, run the uploaded gcode
- OR, make your project with a shape at X170 Y10 0,2mm tall, and add custom gcode to Printer Settings/End G-code. Code is listed below.
Demonstration
Blob forming:
Cleaning action:
Custom GCODE listing:
G1 X170 Y10 Z0.5 ; Move to 170,10,0.5
G1 F200 E25 ; Extrude filament at a 200mm/min, 25mm
G1 E5 F4200 ; Retract 5mm
M104 S180 Start cooling down to 180C
M109 R180 ;Wait for nozzle 180C.
G1 Z10 F720 ; Move Z-axis up 20m
G1 Y50 F4200 ; get out of the way so it can drop in the end.