# 3D printing

* .f3D = Fusion360
* .ipt = Inventor 2021 design file 
* .STL = just 3D shape
* .3MF = 3D print slicer file
* .gcode = prusa file?

TPU: softer rubberish something

MJF: less amateur multi-jet-fusion process, looks acceptable for ECU case if nylon 12 whatever is nylon 12.