Yet Another Bowden Coupler (PC4-M6, PC4-M10) 3D Printer Model

Author: @
License: CC BY-NC-SA
File formats: stl
Download type: zip
Size:1.8MB

The file 'Yet Another Bowden Coupler (PC4-M6, PC4-M10) 3D Printer Model' is (stl) file type, size is 1.8MB.

Summary

All of PC4-M6 I tried have some flaws:

  • Wrong thread pitch or diameter
  • Easily breakable
  • Designed for filament coming off the tube, not into it
    • It has countersink on 4mm to 2mm transition
    • Filament could clog or catch an edge of the tube, especially on the end of the spool where filament bends a lot
    • This forces you to countersink the tube too
    • Even if you do it you're not entirely safe

So I designed that one with flat transition from 4mm to 2mm which works better even without countersinking the tube.

And since tapered thread was actually hardest part I did PC4-M6 with countersink and PC4-M10 with tube pass-through too.

So you have:

  • PC4-M6 with flat transition to use on extruder motor side
  • PC4-M6 with angled transition to use on hotend side
  • PC4-M10 with 4mm all the way
  • Tightening nut, which is universal for all three.

When printing:

  • Use concentric infill or high number of walls.
  • Print with M6 thread on the bottom with brim and tree supports.

For better search: pneumatic fitting, bowden fitting adapter, extruder coupling

PC4-M10.stl 1.3MB
PC4-M6_Countersink.stl 1.1MB
PC4-M6_Flat.stl 1.1MB
Tightening_Nut.stl 572.1KB