Nozzle cleaning system used for d-bot like setup there 2 versions. I am using 2nd one. For the first version need to find proper filament or made it from high temp silicone 1st mbot-ncleaner-p1.stl mbot-ncleaner-p2.stl mbot-ncleaner-p3.stl - this part should be printed from nylon or any hi temperature material

2nd mbot-ncleaner-p1.stl mbot-ncleaner-p2-v2.stl - insert the nylon cable tie as cleaner

Also you need bolt m4x50 (or check you length) and m4 nut

See how it works https://youtu.be/JTeZovYv2Ek https://youtu.be/6UNPKr_04b4 Will attach photo soon.

I have home position with negative value on axis X -20 outside bed (but it doesnt matter, jut need area to clean nozzle)

In gcode using this snippets to clean nozzle at start or change tool Clean nozzle (put it after nozzle is ready and it was homing was done and x already on the postion to use cleaner): G90 ;absolute positioning M83 ;Set extruder to relative mode M106 S200 ; enable cooler G1 Y30 F4000 G1 Y5 F4000 G1 E5.0000 F800 ;extrude 5mm G1 E-3.0000 F1800; retract 3mm G1 Y30 F4000 G1 Y5 F4000 G1 Y30 F4000 G1 Y5 F4000 G1 Y30 F4000 G1 Y5 F4000 G1 Y30 F4000 G1 Y5 F4000 G1 Y50 F4000 M107 ; off cooler M82 ;set extruder to absolute mode

Change tool script

; change it T1->T0 ;T1 ;assume T1 was selected before G1 E5.0000 F500 G1 E-7.0000 F2400 G1 E2.0000 F2400 G1 E-47.0000 F2400 G1 E-60.0000 F1000 T0 ; switch to T0 G1 E100.0000 F2400 G1 E40.0000 F400 G1 E25.0000 F200 G90 G1 Y30 F1000 G1 Y5 F1000 G1 Y50 F1000 G91 G1 E-4.0000 F1000 G90 G1 Y30 F4000 G1 Y5 F4000 G1 Y30 F4000 G1 Y5 F4000 G1 Y30 F4000 G1 Y5 F4000 G1 Y30 F4000 G1 Y5 F4000 G1 Y50 F4000

Update: 05.05.2017 Added few photos