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chrisr

UM2 Bowden tube ?

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I'm sure this has been asked and solved before but I can't find it anywhere on the forums (Sander or whoever's responsible for the website - can you please fix/improve/replace the search engine?)

The shop doesn't seem to be selling the UM2 bowden (at time of this post, it isn't) does anyone know an alternative supplier ?

I've found plenty of Teflon/PTFE tube manufacturers but no one who carries the unique dimensions that the UM2 bowden seems to have -

6.5mm o/d and ~3.2mm i/d (as best I could measure it)

Anyone any ideas?

 

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I think Chris is looking for a Bowden tube from PFA not Gold... :p

 

Lol! Is this not the correct material? I know 25 feet is a bit excessive, but it's going to last me a looooooong time ;-)

 

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Thanks cor3ys, that's a lot more reasonably priced. Just ordered some!

Nicolinux thanks, the new store confused me a bit as it said "only compatible with ultimaker original" but good to know it will work fine with the UM2. Thanks for all the help guys :-)

 

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If it's for a UM2 you may have problems with the couplers (which hold the bowden tube in place at either end) not having sufficient grip to hold the bowden in place, as they're for ~6.5mm tube (or as I just learnt) 1/4" outer diameter tubing.

Can't see a problem with the inner diameter being 4mm though.... ?

(thinking a bit more I wonder if 0.5mm would make that much difference....?)

 

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Would a ID 4mm OD 6mm tube like the one used on Repraps also work? And maybe even resolve some of the issues with real 3mm filament having too much friction in the 3.2mm tube?

 

no it will not work, I bought some (from China) and it pulls out of the coupler while printing, its best to source 1/4 by 1/8 inch

 

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diamTube

Just for fun tried some waterrfiltertube with the correct OD but a larger inner diameter.

Prints fine, although will for sure impact the retraction settings, could be good for people who have some 3mm plastic they want to use..

waterFilterTube

and used the clips from the waterfiltermen as someone posted in another tread, they are perfect, same size as the UM clips. Bit differenth shape but thats fine.

plasticClip

 

http://www.amazon.co.uk/dp/B006PF1RBK/ref=pe_385721_37038051_TE_3p_dp_1

 

 

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The ebay.co.uk seller listed above does not ship international. Is there another source for longer pieces (2-3m) of the 1/4" OD, 1/8" ID tube that ships to Germany at reasonable prices?

Perhaps this one...?

9,50 EUR per meter and 7,00 EUR for DHL is still reasonable, isn't it?

 

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Ordered 5' of 1/4" X 5/32" ultra clear PFA tubing from McMaster-Carr today ($4.78 / ft + shipping). Should be enough for two bowden tubes for my UM2. We'll see if it works out.

 

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Ordered 5' of 1/4" X 5/32" ultra clear PFA tubing from McMaster-Carr today ($4.78 / ft + shipping). Should be enough for two bowden tubes for my UM2. We'll see if it works out.

 

Was the ultra-clear PFA slippery enough to allow your filament through?

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Ordered 5' of 1/4" X 5/32" ultra clear PFA tubing from McMaster-Carr today ($4.78 / ft + shipping). Should be enough for two bowden tubes for my UM2. We'll see if it works out.

 

Was the ultra-clear PFA slippery enough to allow your filament through?

 

It seemed to be slippery enough, but retractions were an issue on some prints, enough that I went back to my stock tube. I'll save it to use if I get some oversized filament (actual 3mm or larger). Maybe using 1/4 X 1/8 would work but I haven't ordered any yet.

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