Filament Pulley for Rostock 3D Printer

by mm-cnc, published

Filament Pulley for Rostock 3D Printer by mm-cnc Nov 9, 2012
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Pulley for my wooden rostock variation. It's made for 0.5mm Dyneema.


You can insert 2 M3 nuts to fix this pulley on your stepper.
The inner hole for the Dyneema Line goes curved arround the hole for the stepper.

The initial idea did not work. To less windings.
I use it now with only two windings arround it and not going trough the middle hole. Works great with the right tension.

In normal use, you can only travel 300-400mm

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Thanks it's good part

i would use this one. is better:


you dont need to think about overlapping by using a fishline with diameter under 0,15mm....

Spool for fishingline for 3D Printers, Nema 17, Spule fuer 3D Drucker

advertizing your own stuff without any facts is a bit rude, isn't it?


For sure the one you posted isn't better. Have you ever tried my design? I use it since 2000 printing hours on my Woodstock/Rostock printer. The perfect guide reduces the stress for the fishing line dramatically.

i made them out of aluminium, i think this will be more durable then plastic ;-)

Don't you think, that this is a comparism between apples and pears? ;)
The sharp edges of the aluminium part will add much more stress to the fishing line. Just give it a try before bad-mouth something.

These look great and im getting some printed for my 3d printer im building, im going to have to try and make some longer ones at some point as i need more travel for the tall rostock printer im building, any advice ?

Fishing Line Pulley for my DIY Ultimaker
by mm-cnc

I'd like to see the setup your using to hold these pulleys. Is the performance of this comparable to that of a hobbed driver? Cool idea man.