The extruder @Thomas_Sanladerer reviewed is very nice and really has a nice brush on it. But the fact it cant print normal filaments that well makes it kind of unnecessary.
This is a view on my extruder. Can print ninjaflex through a 0.4 nozzle with 0.8 extrusionwidth at 40mm/s @ 0.2mm layerheight which is quite impressive i think. No PTFE liner or such.
But to be fair its 2.85mm filament ;D
Agreed. I don’t know that there’s much true market. Printrbot has printed flexible filament (1.75) at almost PLA speeds with their new extruder setups and the prints look awesome. I just don’t feel the need to get a separate extruder just for flexible. I do like the cam setup for the tensioning. I would like to see manufacturers have different loads displayed as I tighten down the tensioner screw on extruders.
I can print ninjaflex just as fast as I can print PLA on my R2x, with the caveat that NF needs a higher extrusion multiplier when you start getting over ~3-4mm^3/sec or so (because of the springiness and nozzle back-pressure).
That 3mm can print flex more reliably isn’t huge news but you need a heavier motor to do that, I see that’s a metal gearboxed motor. The Flexion is goofy for not being more universal. I wondered before if their 4 pressure settings was enough, sounds like it isn’t.
@Nathan_Walkner it’s volumetric flow rate that counts, I can print Ninjaflex over 100mm/s with 0.1mm layers and a 0.6mm nozzle because the low layer heights mean less flow rate and the big nozzle means less back-pressure. Wouldn’t want to though, it tends to blob more when you do a lot of acceleration. Makes nicer prints with thicker layers and lower feedrates.
