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Flexible TPU materials?

David Hogg
(@hogster)
Estimable Member

Hi all 🙂

How does the Robox fair with flexible TPU materials like this?

https://fpvframe.ch/fpvx/product/sainsmart-tpu-1-75mm/

Are any brands particularly favoured / more reliable than others?

I've got the dual-material head on my printer at the moment.

Many thanks!

David

Quote
Topic starter Posted : 30th November 2022 10:02 am
Lee Bowman
(@leecel)
Eminent Member Admin

As long as you have a flexible filament-compatible extruder fitted it will print with TPU. Your extruder is flexible compatible if its housings are grey or half grey half black, if its all black its not compatible.

 

It can be a pain to load flexible filament into the robox as it flexes as its shoved up the chute to the extruder, if you insert a 200mm piece of bowden tube into the chute first this then allows you to feed the filament into this piece of bowden which then helps loading without issue.

ReplyQuote
Posted : 2nd December 2022 5:00 pm
David Hogg
(@hogster)
Estimable Member

Hi Lee,

Thanks for your reply!

Yes I have an all-grey dual-material head, like this one:

https://cel-uk.com/shop/robox-dual-material-head-rbx01-dm/

So it sounds like it should be compatible.

I'll get a reel and see how I get on.

Thanks! 😀 

David

PS. Thanks for the tip about the Bowden tube too – what are the dimensions of a Bowden tube (ID and OD) so I can source something suitable?

ReplyQuote
Topic starter Posted : 2nd December 2022 9:56 pm
Lee Bowman
(@leecel)
Eminent Member Admin

@hogster bowden is 3mm od 2mm id

 

ReplyQuote
Posted : 5th December 2022 3:29 pm
David Hogg
(@hogster)
Estimable Member

Posted by: @leecel

@hogster bowden is 3mm od 2mm id

Thanks Lee! 👍 I've just ordered some bowden tube, 2mm ID, 4mm OD. Is it safe to push this into the filament guide until it stops? The printer won't try to pull it in I assume? (!)

Many thanks,

David

 

This post was modified 2 months ago by David Hogg
ReplyQuote
Topic starter Posted : 5th December 2022 3:31 pm
Lee Bowman
(@leecel)
Eminent Member Admin

@hogster no it will be too wide to enter the extruder

ReplyQuote
Posted : 7th December 2022 11:21 am
David Hogg
(@hogster)
Estimable Member

Thanks for letting me know Lee!  👍

ReplyQuote
Topic starter Posted : 7th December 2022 11:30 am
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