MK7 NinaFlex Adaptor

I have a Prusa I3 with an MK7 extruder which I wanted to use to print Ninjaflex. If you have ever tried to print this stuff, you may have discovered it is like trying to push a wet noodle thru the extruder!

The filament is so flexible and the distance between the gear and barrel will cause the filament to go anywhere but thru the nozzle.

I decided to see if I could do something about that and as a result, I present to you, the Wet Noodle Adaptor...

Okay, this thing looks pretty simple, but the tolerances are really really tight, so before you tackle this, make sure your bed level (goes without saying, but too many people skip this part).

Slice the STL file with a layer height of .15mm with support.

Bring your bed up to temperature. I use 115C on PEI. After the bed is up to temperature, set your Z axis so that you can slip a sheet of paper under it and it touches the bed and the nozzle just enough to move easily.

First layer height is very critical for this part!