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bowden system based on wades (rostock delta and regular versions)

by Petehagoras, published

bowden system based on wades (rostock delta and regular versions) by Petehagoras Nov 30, 2012
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20655Views 3665Downloads Found in 3D Printer Extruders


A bowden extrusion system for a 6mm tube, based on wades extrusion system, no "special parts" that not anybody could access easily are needed.

Until now I wasn't able to test it in action, but it seems very promising to me


Extruder side:

The extruder with its gears is this one: http://www.thingiverse.com/thing:18379 thats why its marked as derivate of it. If Greg, Jonas or anybody else involved in these extruders are not confortable with the fact i uploaded the stl files, please tell me, then i would remove them and give certain instructions to your files. (Cause I highly respect your work)

I scad-ed jonas kuehlings extruder for grrf hotend, with 6mm filament feed hole (for bowden) and 0,4mm layer height. The gears are just combined to one stl file.

place the bowden adapter into the extruder instead of a hotend, and push the bowden through everything, till under the hobbed bolt. Maximise the outside friction, just tu put the tube into the adapter wouldn't be enough to be reliable. Tight = better !

secure the bowden adapter with 2pcs m3 x 30 screws

Hotend side:

why is it in 2 parts ?....beacause i don't like ABS. I'm printing PLA only, and I want to avoid a fan next to the hotend. I'm using different PLA materials. The white one has a softening temperature of 90°C, but hasn't got high tensile strength qualities, so clamping the bowden tube and thin walls don't work that well. That's what the bowden clamp is for.

Put the bowden clamp into the hotend mount, connect it with 2 m3 x 25mm screws.

Hotend into the hotend holder, secure with 2pcs m3 x 25mm screws. As I have a PTFE Tube, I decieded to drill 6mm into the PEEK holder, so that the PTFE tube goes right through to the brass nozzle, to lower inside friction.

Secure the bowden tube with 2pcs or 4pcs m3 x 20mm screws. (normally 2 are enough, but there is the option the use 4 ;-) )

sorry for being to lazy to place nut-traps, but im a bit short of time atm.

mount everything onto the carriage, with 4pcs m4 x 15mm screws.

Use washers and of course nuts for every screw.

feel free to adapt the hotend mount to your hotend, skp file is upped aswell.

update: now also available for non delte printers, i.e. Prusa

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Hi. A question regarding your hot end: how is it heated up? I've also planned to make one with the same or similar design. Thanks!

Hi. Sorry fpr the late reply. In this picture the Heaterblock isn't mounted yet. It's a standard modular hotend. The wiring would go through the end effector and upwards.

OK, silly question - do the herringbone gears actually move the filament or do I need to find a hobbed bolt?

 Hy, perfect thing ;)
for 1.75 filament yet please :)
And 2 more holes so that you can use it on this slide

Thank you so much,
Unfortunately I can not because I can not Sketchup: (

Greg's X-Carriage with Kühling's LM Holder
by tommyc

 whats the outer diameter of your bowden tube for 1,75mm filament ?

 there u go ;-)

Many many thanks :)early christmas

Is this a 3mm or 1.75mm extruder?

 basically its for 3mm filament, but it depends on the bowden tube. it should work with every 6mm tube, but i assume if the inner diameter of it is i.e. 4mm, a 1,75 filament wouldn have too much space around, but i'm not shure about this issue. for a smaller one, the diameters of the extruder (via the original SCAD files from Jonas Kuehling), adapter and clamp. I'm going to  upload the skp files for that. Another option: tell me your needed diameter and i'll add them.