New Spring Loaded Bowden Extruder
by adrianm1972, published
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This is a new original Bowden extruder. My goal was to enclose the filament path and maintain its alignment as you increase/decrease spring tension or lift it off the extruder gear.
1 M5 thread bowden tube fitting
1 608ZZ bearing
1 bangood bed leveling spring (20mm L, 7.5mm OD)
1 M5 x 30mm button head screw
3 M3 x 10mm button head screws
1 M3 x 20mm button head screw (see note below)
Use the 20mm screw as the tension arm pivot. On my stepper a 20mm screw bottoms out tight with the tension arm held tightly to the stepper mount. However it can still pivot freely. This may vary with different motors and screws. Go to a shorter or longer screw and trim it if necessary to get the right fit.
- Drill out the filament path with a sharp 5/64" or 2mm drill bit to ensure the diameter is perfect and to clear any filament that may have drooped into the path. Use very low RPM if you go fast it will get hot, melt the PLA and make a mess.
I have printed this, it all fits and works as designed. See pics above...enjoy!
Hypercube 300 CoreXY
- 2 skins and 50% infill makes parts very stout.
- 3mm brim to improve bed adhesion.
How I Designed This
Designed with AutoDesk Fusion 360.
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New Spring Loaded Bowden Extruder by adrianm1972 is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.
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