MakerGear Forum

We have just got a M2 Single Extruder with a .35mm nozzle looking to successfully print with NinjaFlex material.

We use Simplify3D to setup our print process and slice.

Would anyone know good recommended settings in Simplify3D for this material to make a good print?

Bigger nozzle?

Any suggestions would be appreciated.

I wrote earlier about "What sticks to Ninjaflex?" I can definitely now say ABS is one. Notice in the following pictures that you can build Ninjaflex on ABS, but you cannot build ABS on Ninjaflex; it warps away from the bond. I used a rectilinear fill on this one; I think the hex fill will actually be better, since I could see flaws in the infill during the build due to the stringiness of the Ninjaflex. You can see how stringy the Ninjaflex is, as the gold build up on that side of the ooze shield. The blocks are 30mm X 30mm X 10mm. BTW, I always use a 0.50mm nozzle for flexibles.

ninjaflex on my machine:

235°C nozzle
50°C bed
20 mm/sec speed
.20mm heights
NO nozzle fan at all

The stock nozzle size is fine. You will probably need to tighten the filament tensioning screw a bit on the print head.

DO not prime the nozzle using 10mm bumps as you would most filaments. You will choke the print head. 1mm feed bumps only.

Semiflex works with the same settings, except you can bump the speed to about 35mm/sec.

Ninjaflex sticks very well to PETG. I made this with 15% hexagonal fill, which makes it comfortably spongy. You can also see how well it sticks together under tension. Sizes are the same as last, except heights are 1/2.

This large piece of Ninjaflex did not come out as well as I would have liked. I might have it a little too hot, 245C, so maybe that is why I get so much ooze. I had the top layers set for 4, so I do not know why the crappy top. (BTW, I should have remembered to put a chamfer on the edge.) I was also disappointed with the delamination of the sides when bent. The piece is not very soft, and I can stand on it without squishing it much, even at 15% infill.
The good side is that the sides feel very durable and suitable for the intended purpose, a shotgun butt-pad. I will have to redesign it not relying on low-percentage infill for the absorption, but specifically making structures to do so.