A10m purge bucket with side-exit

thingiverse

The original purge bucket was a game-changer. It significantly accelerated my prints and minimized waste when doing two-color prints. This version features a curved chute with a side exit. To get it working, I applied a layer of foil tape to the inner surface. With the tape in place, PLA glides smoothly through the chute. The bucket doesn't reach the edge of the aluminum extrusion because it would collide with the Z-axis end-stop. Instead, I added another flap of aluminum tape to guide purged filament into a tray next to the printer. For a wiper, I doubled up two layers of 1mm silicone sheeting (available on Amazon). Alternatively, you can pick up some 2mm sheet from https://www.amazon.com/Silicone-Durometer-Smooth-Backing-Thickness/dp/B00LNE8CZW/ref=sr_1_5?s=industrial&ie=UTF8&qid=1549075387&sr=1-5&keywords=2mm+silicone+sheet. I adapted 3DMN's G-code for S3D to work with Cura. Here's the current iteration: Settings > Printer > Manage Printer > Machine Settings > Extruder (1,2) Tabs. Paste the following in the extruder start/end G-code for EACH extruder: EXTRUDER START G-CODE ; Start Extruder 1 M211 S0 ; Disable soft stops G1 X-9.5 F6000 ; Move to X=-9.5 at 100 mm/sec G92 E0 ; Reset extrusion distance on new tool G1 E50 F90 ; Extrude 50 mm of filament at 1.5 mm/s on new tool M211 S1 G92 E0 ; Set current extruder position to 0mm G0 F10000 ; Increase feed rate before next travel. EXTRUDER END G-CODE ; End Extruder 1 G92 E0 ; Reset extrusion distance G1 E-5 F5000; Retract 5 mm 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 on old tool IMPORTANT: Make sure you set the "nozzle switch retraction distance" to 0, or you'll end up with big blobs on your print.