This topic contains 28 replies, has 10 voices, and was last updated by 
click 1 year, 1 month ago.
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@biscuitlad “@clicky – it can’t. You can’t push rope, as they say.”
I am starting to see where I was too hopeful. Thanks for the lengthy explanation and ref to video (still have to watch it). It is, kind of, shame. But Robox, after all, is designed well and I wouldn’t be surprised if new type of head appears only for such flexible materials (for the small price of £200 or so)… And that’s cheaper, better, solution then buying another printer for £400-500 as Printrbot is at the moment…
Only thing is that we won’t see it for a while. How long we can’t even guess…
AnonymousIt’s possible, but hard to envisage. Might be difficult to get the filament to travel down the bowden tube at all, even if you could mount a very small extruder over the head to pull it the last few centimetres.
But I will have a go with some Filaflex & Polyflex and let you know how it got on.
I’ve mentioned it before, but I think there’s some mileage in the possibility of running a flexible drive shaft beside the Bowden tube to the head, driving a secondary set of extruder gears at that point to supplement the pushing force of the existing main extruder.
Tom Gidden -- Bristol, UK
@biscuitlad i didnt meant that u are lame… it is just an expression..
anyway thank you for the links…
now i have to think about opening the extruder head and see if i can fit a “guide”
Does somebody has experience with this or already thought about that?- Opening the head ? Pics?
- free space in the head ?
- worth the try?What about the second extruder head Q2 2015 will this head have the capability to print flexible material?
Are CEL workers willing to answers this?Could they not try a Teflon or other non stick type of surface on the inside of the bowden tube? then the “pushed rope” would not stick and hopefully slide to where we would want it.
AnonymousIt’s already PTFE I think. Feels pretty slippery to me.
AnonymousActually, as I mentioned in another thread, it might be worth trying to oil the filament. See the Ultimaker forums. I have some silicon spray that might be worth a go too…
Wouldn’t oiling the filament cause slippage?
AnonymousWell, the other recommendation for flexible filaments is to slow the print speed right down, so maybe the extruder doesn’t have to push that hard. Also heard the these filaments are often a bit ‘sticky’, so it’s better to have the spool flat on the ground rather than on a holder, as the filament can sometimes get stuck as the extruder pulls it off.
oiling the filament did not help when i tried it with nylon, not sure about something that is even more flexible, I however heard many success stories on other printers, but maybe it does not make much of a difference with the extruder we have, again I only tried it with Nylon.
Moh
@mistsoul Attached is my profile for Bridge. I have good luck with this profile, though I haven’t tried using it since about AM 1.0.0.13 YMMV. Maybe it will help with your slippage issues.
I operate two Betas and one Production Robox.
Hey MR HUDSON,
i read u fixed a beta printer ur second robox ^_^
Will we read soon about ur ninjaflex experience? ,-)
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