Dual Extruder Y adapter

thingiverse

Y adapter piece for dual extrusion prints on a Bowden system M6 threaded adapters are used. M3 x 10mm screws hold the unit together The unit is in two pieces, making it easier to clean if needed It is stronger than one-piece setups The threads will actually print at M6 Other designs can be made if required Simplify 3D tool change script, borrowed and edited from http://www.thingiverse.com/thing:1926351 G90 G1 X ...xlocation Y ...ylocation F4800; Move X Y for tool change T[old_tool]; Select Old Tool G92 E0; Zero Extruder G91; Relative Coordinates G1 E-15 F3600; Fast Retract 15mm G4 P600 G1 E13 F3600; Fast Reinsert 13mm G1 E-13 F3600; Fast Retract 13mm G4 P1000; Pause 1secs G1 E-100 F3600; Fast long retract G90; Absolute Coordinates G92 E0; Zero Extruder T[new_tool]; Select New tool G92 E0; Zero Extruder G91; Relative Coordinates G1 E110 F3600; Fast insert 110mm G1 E5 F300; 5mm/s Feed 5mm G92 E0; Zero Extruder G90; Absolute Coordinates My x location and y location are set manually to be in the center of the prime tower. This way, oozing or extra prime is centered within the tower. The little blob then levels and nozzle cleans as it prints the prime tower. My overall retraction is set to 115mm. However, you can adjust this to a much lower setting if needed. It's best to bring the filament back into the Bowden tube so you can see where it is. You can also see the plug on the end and determine where to set the second color when initially loading. In Marlin, you need to enable 2 extruders and single nozzle functionality. You must define one hotend and one thermister, but not two. The best Bowden adapters allow a 4mm PTFE tube to run all the way through them. Chamfer the inside edges of the PTFE tube to minimize blockages. Run the PTFE tube all the way to the plastic chamfered section of the splitter. Update: I have shortened the splitter. Print Settings: Printer: COREXY Chinese Clone Rafts: No Supports: No Resolution: 0.12 Infill: 30 Notes: Print flat face down. Ensure to print two parts and not double up one part