X Gantry Nozzle Cleaning Brush

thingiverse

X Gantry Cleaning Brush ================== This script operates a wipe arm based on a common disposable copper wire bristle brush to clean the Ultimaker Cura post processing system. The Ender3's LCD/controller module is in its default position, which interferes with the operation of this mod. To resolve this issue, move it to another location or use an adapter that tilts the panel up and gets it out of the way of the cleaning assembly. # Installation * Move XGantryWipe.py to the Cura /plugins/PostProcessingPlugin/scripts/ folder * Print Ender3_CR_10_Nozzle_Brush_Arm_v1.03.stl * Cut the brush end from a wire brush and push it into the slot * Use an M4TNut to mount the brush arm at the end of the X gantry loosely * With the printer off, slide the x carriage over the brush and check that it only touches the nozzle and there's no other obstructions on that side of the gantry * After adjusting the angle the brush is held for your hotend, tighten the M4 in the T-nut to hold it in place # Script Use In Cura Extensions > Post Processing > Modify G Code, click Add a Script and select XGantryWipe. # Method This plugin removes software endstops so it's possible to go beyond the bed measurement on the X gantry. This allows a nozzle cleaning brush to be positioned in the overflow area of the X gantry that can wipe between layers. # Credits The initial code was copied from this forum entry on Ultimaker: Kin's Ultimaker Community Wipe Plugin (https://community.ultimaker.com/topic/15655/how-to-make-a-plugin-anyone-have-a-plugin-to-do-x-action-every-layer-like-a-nozzle-wipe/) # Code For Printer Start / Wipe If you just want to wipe at start of the print and don't want layer wiping or can't use the plugin, here's the gcode to run at print start. It includes a re-home of the X axis in case it loses steps while wiping. ; Clean Print Head M211 S0; Turn off bed limits G0 X250 F5000 ; Move over brush G0 X235 ; Move over brush G0 X250 ; Move over brush G0 X235 ; Move over brush G0 X250 ; Move over brush G0 X235 ; Move over brush G0 X250 ; Move over brush G0 X235 ; Move over brush G0 X250 ; Move over brush G0 X0 ; Move home M211 S1 ; Turn bed limits back on G28 X0 ; Re-home X ; End Cleaning Routine WARNING ======== ### If the brush bristles contact exposed wires on the thermister, it can short the board and ruin your printer. The thermister has power running through it that can damage the board if it's shorted. For this reason, mount the hotend power and thermister wires so they face away from the brush and make sure there's enough clearance that the wire brush only touches the nozzle and can't reach those wires.