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I printed Ninjaflex (shore hardness A85, Filaflex is A82), 1.75mm :
The path is not very short but the PTFE tube of the hotend is very close to the driving wheel and cutted it to fit both the pinch roller ball bearing and the driving wheel itself, no space left for the filament to run out.
I usually print at 30mm/s that is 50% faster then the recommended printing speed.
I tested both E3D v6 and E3D Lite hotends with success.


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