Geeetech A20M Purge Bucket

thingiverse

Here's my first iteration of the purge bucket for the Geeetech A20M. Installing this along with the tool changing script, which I've tested on Simplify3D only, will allow the purge to happen within the bucket instead of the printer printing a purge tower. This reduces waste and speeds up printing time. https://www.youtube.com/watch?v=XDZzQ2S6jt4&feature=youtu.be It installs using existing nuts on the right-hand side X-Axis bracket, simply tighten them lock-first when reassembling. You'll also need a 3mm-thick piece of silicone for the nozzle wipe part. I also use some aluminum tape for the inside of the purge bucket to prevent hot filament from sticking. I leave the bottom tray open so purged filament just falls out of the bucket. Simplify3D Tool Changing Script: ;; Start custom tool change script M211 S0 G91; Switch from absolute positioning to relative positioning G1 Z1 F1000; Lift nozzle by 1 mm in relative positioning mode G90; Return to absolute positioning G92 E0; Reset extrusion distance (needed for following steps) G1 E-7 F1800; Retract filament by 12mm at 30 mm/s on old tool G1 X-9.5 F6000; Move to X=-9.5 at 100 mm/sec G92 E0; Reset extrusion distance on old tool {IF NEWTOOL=1}T1; Activate tool 1 {IF NEWTOOL=0}T0; Activate tool 0 G92 E0; Reset extrusion distance on new tool G1 E51 F180; Extrude x mm of filament at 3 mm/s on new tool G92 E0; Reset extrusion distance on new tool G1 E-10 F1800; Retract filament by 5mm at 30 mm/s G1 X[current_position_x] Y[current_position_y] F6000; Move to next position on print at 100 mm/s G91; Switch from absolute positioning to relative positioning G1 Z-1 F1000; Move down nozzle by 1 mm in relative positioning mode G90; Return to absolute positioning M211 S1 ;; End custom tool change script