March 28, 2021
Description
This is an extruder wiper. I was tired of cleaning each time the extruder with tweezers before printing and having a ton of strings everywhere so I copied the idea from @GusmanBjork and created a wiper with a kitchen's silicon brush, so it gets clean automatically before each printing.
For the wiper itself I have used kitchen's silicon brush where I've shorten the bristles of the brush and made a slit in the middle to insert the support. In my case:
Here is my start script that you may have to adapt depending of your printer and homing position:
G21 ;metric values
G90 ;absolute positioning
M82 ;set extruder to absolute mode
M107 ;start with the fan off
M117 Homing ;
G28 X0 Y0 ;move X/Y to min endstops
G28 Z0 ;move Z to min endstops
M117 Cleaning ;display the text "Cleaning"
G1 Z3.5 F9000 ;move the platform down 3.5mm
G1 Y80.0 F1500 ;move to beginning of brush
G1 X1.0 F1500 ;offset head of 1mm
G1 Y38.0 F1500 ;move to end of brush
G1 X0.0 F1500 ;offset head of -1mm
G1 Y80.0 F1500 ;move to start of brush
G1 X1.0 F1500 ;offset head of 1mm
G1 Y38.0 F1500 ;move to end of brush
G1 Z15.0 F9000 ;move the platform down 15mm
M117 Init extruder ;
G92 E0 ;zero the extruded length
G1 F200 E3 ;extrude 3mm of feed stock
G92 E0 ;zero the extruded length again
G1 F9000
M117 Printing ;
License:
Creative Commons - Attribution