DaVinci Pro 3in1 Gear Housing

thingiverse

I wanted to print TPU filament on my DaVinci 3D pro printer. The stock feeder gear assembly was too loose for flexible filament. Based on ideas from Oscar J. Pacheco-Barajas (www.youtube.com/watch?v=xOYTMc_UDc4), I modified the brackets to use a standard PC4-M10 pneumatic fitting push connector and M10 nut. This allowed me to run a 4mm OD, 2mm ID PTFE feeder tube into the gear exit, tightening the gaps and forcing flexible filament into the tube. Cutting a V at the end of the tube was essential for filling the gap. I also replaced the tubing at the heater end with a 2mm ID PTFE tube to prevent filament from plugging up in that area. My system printed the part using a Resin printer, but I have not tried printing it using a filament printer.