bowden for tpu D-pusher

thingiverse

This bowden was designed so I can use some TPU filament that I bought. One of the nice features is you can use a wing nut to undo the filament clamp, then eyebolt spring assembly swings away easily making it very convenient for filament changes as no tools are required. Parts required: 2 3mm x 8 socket caps + 2 more for mounting as shown 2 3mm x 30 socket caps 2 10-32 x 3/4 pan head screws 1 3/16 (#10) eyebolt (about 2-3 inches long) 2 10-32 x 3/4 pan head screws with sharpened tips or cone point set screws 1 5/16 - 18 x 3/4 bolt a skateboard bearing an #8 fender washer for underneath spring an #8 washer for nut side of spring a wing nut for eyebolt a spring a MK8 drive gear a 4mm Teflon tube (with feed sides cut at angles to get as close as possible to the drive) 2 possibly lock 10-32 nuts (if they vibrate out or not yet) A toothbrush works well for cleaning out debris in the teeth of the drive gear. Note. This pusher comes in two mounting configurations: one is side mount and the other is flat mount which is parallel with the face of the motor. I recommend using the flat mount configuration because it allows you to tighten the MK8 set screw while the pressure bearing is engaged, ensuring that your filament path is properly located with less effort. Most pushers seem to be in the side configuration so I added that configuration just in case. Additional configurations! I created an arm that uses a 10-32 bolt instead of a 5/16 one. You will also need to print the bearing adapter. to make this work. You would also need to get a 10-32 x 3/4 bolt instead of a 5/16 x 3/4 one. Be cautious, as this configuration has not been tested yet. https://youtu.be/LHt3Pa1E_KI