Ninjaflex

[Twac1]

So I've been doing some test prints with ninjaflex and it seems to be bonding to itself well and of course sticking to my bed good. Only thing is I feel like I should either turn up the flow rate above 100 on the controller or in matter control as it seems to somet leave voids? Anyone work through this before? I would like to print a full phone case if I can get more solidity

[joe]

Yes, increasing the the flow rate works well. I am at 1.15 extrusion multiplier for ninja flex. Print on a cold bed too.

[Polygonhell]

I haven't done alot of printing with ninjaflex, but I'd expect to have to set the extrusion multiplie slightly over 1. The compression of the filament effectively changes the radius of the drive gear slightly. This also happens with ABS over PLA, but it's very subtle in that case.

[Twac1]

So the flowrate of 1.15 works well until... for some reason on two prints at different times I've clogged up somehow? It puts a kink in the filliment and ruins it. Ran great for an hour, then got stuck. I tried to pause it and clear the clog but when I pause 15 seconds later there is no option to restart? Temps at 225c

[joe]

Where does it kink? What extruder are you using? I run at 235c for the hotend.

[Twac1]

Kinks in the Bowden tube, or looks like it when I retract it
Is the 235 your running verified with external meter?

[joe]

Yes, my hotend is verified. You will not be able to do retracts like you would with normal filament. In fact turn your retraction to 0 and increase your xy non printing movement to 200mm/s. it will cut down stringing.

[Twac1]

Thanks for all the help! Going much better now! Next challenge NYLON

[Twac1]

so I thought I had it down. I don't... I was able to improve my outcome by slowing the speed down to 15mms and increasing the flow to 1.15, but I designed a phone bumper and on the top layer where there is an overhang to go around the phone I am having issues. with support the ninjaflex just flat out sticks to itself way to good and the supports seem to not be close enough in span to support it well. any tips for supports or do I just need to do better design?