Need help with Ninja Flex on my Makerfarm i3V...

I am using the hexigon .40 hot end.extruder for 3mm filament. The filament often bunches up in the extruder. So far I have tried slowing the feed to 30mm and turned OFF retraction. Neither seems to work reliably. Is there a fix for this issue? if so, can you explain in detil? Your advice is appreciated.

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Thank you
Bill

Ive printed ninjaflex with the hexagon and a .3mm nozzle.
With direct a feed wades reloaded with hexagon gears.
I had to slow it down to 20mms and play around with the temperature and run it a little hotter.
Keep retraction on but slow it down.

You can put an extra bit of plastic in the extruder below the pinch wheel and hobbed bolt to prevent it kinking there.
I did see an extruder body with this built in but cant find it again.

Theres a new material called semiflex its a little stiffer, maybe this will be better for you.

If your using bowden feed. Youve got no chance.

Gordon

How about that ive just come across the extruder body.
Ill have to print this out and have a try.
[www.thingiverse.com]

For both 3mm and 1.75mm filament

If you look just under where the pinch wheel and hobbed bolt shold be theres an extra bit of plastic built up to guide the flexible filament where it kinks.

Gordon

I didn't have any trouble feeding Ninjaflex through my Bowden. I didn't get it sticking to the bed before I moved on to other projects for a while, but I didn't have any trouble feeding it.