Ender 3 Pro - Nozzle Cleaning Brush

thingiverse

***Overview*** Most nozzle brushes are attached to the X-Gantry, while this simiplies cleaning G-code. Marlin has built-in Nozzle Cleaning code. `G12`. Using which you can mount this on the bed, which allows cleaning of the nozzle along 2 axis. Added some M3 holes to add screws to tighten, but its quite snug as it uses a interference fit between the bed and the holder for the brush. This takes 13x40mm brush head from [Amazon.ca](https://www.amazon.ca/gp/product/B082NH9KVJ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1). ** Config Changes ** `Configuration_adv.h` - Adjust probing margins ``` #if PROBE_SELECTED && !IS_KINEMATIC #define PROBING_MARGIN_LEFT PROBING_MARGIN #define PROBING_MARGIN_RIGHT 30 #define PROBING_MARGIN_FRONT 70 #define PROBING_MARGIN_BACK PROBING_MARGIN #endif ``` `Configuration.h` - Adjust nozzle positions ``` #define NOZZLE_CLEAN_START_POINT { { 229, 34, (Z_MIN_POS + 13) } } #define NOZZLE_CLEAN_END_POINT { { 235, -3, (Z_MIN_POS + 13) } } #define NOZZLE_CLEAN_CIRCLE_MIDDLE { { 231, 15, (Z_MIN_POS + 13) } } ``` **PrusaSlicer/SuperSlicer settings** If you are running Prusa Slicer or Super Slicer you can add this `{if (layer_num != 0)}{if (layer_num % 40) == 0}G12 P1 S2{endif}{endif}` simple mod function to do a G12 Wipe every 40 layers. skipping the first or 0th layer. quick explanation. `layer_num` - Slicer's variables that is available for custom GCode `40` - clean ever 40th layer. `G12` - Nozzle Clean - https://marlinfw.org/docs/gcode/G012.html `P1` - Triangles `S2` - Two Strokes You can change that however often you like. This is assuming you have G12 in the start g-code, which does a more thorough wipe, this particular is just a quick wipe of `S2` two strokes Here is Pursa/Super Slicer example, but others will have similar places where you can enter it in.  https://youtu.be/sxx7lO3ldvM https://youtu.be/3B21QGvOcck