antonverburg

It can work - but that's all you can say about it. If you are serious about printing ninjaflex, you should use this mod: https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder. I think it will work on the UM2+ without modification, as the hole locations in the plating of the UM2+ seems to be equal to the UM2.

I did not test with Flex PLA, but on the internet I read that ninjaflex is even much more flexible and harder to print than Flex PLA. I could print Ninjaflex and Semiflex without oil using this mod: https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder. Maybe it is usefull for somebody, so just this hint.

Use this mod if you really want to do flexible filament. https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder To my experience, other methods do not solve the root cause of the flexible filament troubles.

For printing flexible materials this mod might be helpfull: https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder For using dual head configuration I have seen something with magnets on this forum, this thread might be interesting: https://ultimaker.com/en/community/10657-a-different-multi-extrusion-approach-um-tool-printhead-changer If you have an idea about extruding silicone with a syringe, please let it know, I also am interested

If you still want to do flexible filament, use Robert's feeder with my mod: https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder. It not only fixes the feeder/extruder issues, but also the bowden-tube problems and the orientation of the spool.

Further improvement when using Ultimaker 2 with flexible filament: https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder

Use this mod if you want to do flexible filaments: https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder

Use this modification to print quick & good quality flexible filaments: https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder

Flexible PLA on ultimaker 2 in general is a headache. You can improve its functionality using this mod: https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder. I did not test your flexible material, but ninjaflex works great (I can make layers of 0.1mm height), so I think it should work with any flexible filament.

Hallo Marcus, Das oberflach habe ich auch so gesehn. Vielleicht kanst du mal versuchen meine extenz zu printen damit die qualitat sich verbessert: https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder

I have successfully printed several different high-flexible filaments (ninjaflex, semiflex, etc) using my Ultimaker 2. In order to improve print quality I have created a mod that highly improves the quality of the prints: https://www.youmagine.com/designs/ultimaker-2-straight-tube-flexible-filament-spool-holder