WIP: Bowden Based Dual Extruder (More Reliable, Too!)

satoer · Post by **satoer** » Fri Sep 13, 2013 9:17 am

What's wrong with the original belt?

seaton · Post by **seaton** » Fri Sep 13, 2013 12:18 pm

Mine broke after problems with a sagging Y Axis and couldn't source locally here in Australia, I could however get a GT2 belts no problem.

I know it's being picky but using the GT2 with 16Tooth Drive pulley a step resolution 10 micron as opposed to 13.125micron per step with the 3M belt, I like nice round numbers

superhornet59 · Post by **superhornet59** » Tue Sep 17, 2013 3:20 pm

Does the new belt have any effect on print quality?

seaton · Post by **seaton** » Wed Sep 18, 2013 3:29 am

None whatsoever, just as good as it's always been

The first thing I did immediately noticed was the printer seems quieter, probably down to a different steps/mm so probably different harmonics.

superhornet59 · Post by **superhornet59** » Thu Sep 19, 2013 3:02 pm

Oh I didn't think it would get worse, I was just curious whether the finer step-per-mm value would increase repeatability of perimeters (thereby reducing the prominence of layer lines), but I suppose when you're swinging around a 350 micron nozzle, the added 3 micron positioning accuracy won't change much. Quieter is a big plus in my books though! I run my printer day and night in my bedroom... hmm maybe it's time for an upgrade!

I reduced the acceleration value of my printer, and it makes it quieter too, albeit slower.

seaton · Post by **seaton** » Thu Sep 19, 2013 4:01 pm

yes I've ended up doing the same with the original head I as was getting some ringing on corners at the default settings. I'm hoping that with this new carriage and extruder setup I should be able to increase the acceleration and not get ringing due to less mass of the head.

I'm just waiting on the 'Right' pinion gear to arrive (they sent the wrong one arghh!!!!) so everything is now printed in ABS and boy it seems light so I cant wait to test it all out.

naser404 · Post by **naser404** » Mon Sep 30, 2013 12:20 am

okay so im designing also a Bowden version but where to get the 1.75mm tube from ??

seaton · Post by **seaton** » Mon Sep 30, 2013 1:49 am

Afaik the closest you can get is 2mm ID and 4mm OD PTFE tubing. I found mine on aliexpress.com but I'm sure eBay would have some

satoer · Post by **satoer** » Tue Oct 01, 2013 10:52 pm

I've designed a new bowden feeder with a quick release tensioner inspired by this Kiss mechanic: http://www.felixprinters.com/forum/view ... 3640#p3640
Uses the original Felix ribbed wheel and bearing.

twicx · Post by **twicx** » Sun Oct 06, 2013 6:08 pm

satoer did you ever hear back about the rail connection piece for your extruder? I've your feeder printed, but not assembled (missing the springs), and I'm going to start on the extruder carriage tomorrow I think.

WIP: Bowden Based Dual Extruder (More Reliable, Too!)

Re: WIP: Bowden Based Dual Extruder (More Reliable, Too!)

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