This topic contains 25 replies, has 10 voices, and was last updated by 
Ed 2 weeks, 2 days ago.
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Well, I’ve tried PolyFlex, but with ZERO success:
The problem begins with the insertion of the filament. PolyFlex is super flexible. It is possible to carefully push it in to the point where the extruder starts, but one just can’t push hard enough so it can actually grab the filament. I then removed the side panel, so I can feed the filament directly into the extruder.
The filament finally found its way through the bowden to the head, but then the filament begins to slip, and there just isn’t enough pressure on the filament to properly enter the head.
I also had a hard time removing the filament: eject doesn’t work due to the said slip. In the end I had the remove the extruder and use brute force. Luckily after a purge with PLA the machine operated flawlessly.
Any other experiences or even success stories?
….i really need flexible material to!
The nylon PCTPE from taulmann worked … but its nylon..and i need flexible filament to fuse with pla or abs.., is that anyway possible? I have ninja flex and have the same problem… you can find information about baking the filament to make it dry. i will try it now.. i need the flex… =/Soft PLA ?
the forum freaks out when i add a link…
matterhackers.com
I started day dreaming of some kind of tiny extruder near the head which would ‘help’ flexible filament into the head.
It should be quite light and smart to ‘help’ the flow - somehow keep it under constant pressure. Something light as maybe a modified servo which can be set to pull gently to one side (like servo under pressure). It would turn given filament is available, but not have enough power when it gets stopped by real extruder keeping filament constantly somewhat stretched.
Flex EcoPLAÈ - new?
@click : @bhudson has been looking into that as an option for a while.
Tom Gidden -- Bristol, UK -- New Roboxer? Check out the wiki, and add yourself to the map! http://roboxing.com/user_locations@gid Yes, I am aware of it. I wouldn’t be surprised that half of my thoughts originated from his posts…
I have been thinking about it for a while and until recently haven’t made any real idea progress because of the weight of anything on the back of the head is a problem. My recent idea is to use something similar to the frame I built for the cable control system to support the extruder. I am looking at two options; a second extruder behind the head as a helper and mounting the extruder itself on the back of the unit to reduce the tube length and convolution. I just haven’t had a lot of time to work on it because it doesn’t pay the bills. I will keep you updated on my progress once I have more to report.
I am not affiliated with CEL; I operate two Betas and one Production Robox.@bhudson “I will keep you updated on my progress once I have more to report.”
Please do! Especially how you plan to keep that extruder in sync with one on the side of the printer.
IMO CEL needs to come up with a specialized print head sooner or later. Hacking is an option, but not a good one.
make it a Feature Request
java (EE), JavaFX, HTML, GIS) programmer, database wizard, framework inventor, looking for a job ! http://roboxing.com/wizardsWell, I actually was very surprised that the existing head isn’t able to deal with the flexible filaments.
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