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Extruder cable dropping on belts..

Posted by wouterheer 
Extruder cable dropping on belts..
April 18, 2018 03:24AM
Hi All,

I have built a coreXY printer with a build volume of 40x40x40. I'm using a bowden extruder. Due to the larger build volume the cable run (and bowden cable) towards the extruder flexes in a way it completely drops on the drive-belts.

Is there a solution available to prevent bending and does not affect movement? Like a steel spring or something?



Thanks!

Wouter.
Re: Extruder cable dropping on belts..
April 18, 2018 03:44AM
Zip tie bowden tube in a few places to a length of 3mm nylon filament
Re: Extruder cable dropping on belts..
April 18, 2018 07:52AM
I use a drag chain laid on its side in a large loop:



You can sort of see it better here:



I'm using direct extruder and filament feeds straight down from the top. Not sure how well this would work for a Bowden tube setup.


Son of MegaMax 3D printer: [www.instructables.com]
Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]
Re: Extruder cable dropping on belts..
April 18, 2018 01:04PM
E3D was using spring steel cable ties for this purpose on their CoreXY tool changer at 3D Meetup Sweden last weekend. Possibly something like these [www.amazon.co.uk].

Edited 1 time(s). Last edit at 04/18/2018 01:05PM by dc42.



Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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