My idea is that if I ever have to replace a 3d printed part cause of wear & tear over time, I'll look at getting it printed in something really heavy duty, idk 3d printers but I'm assuming something out there will be in the realm I'd want like the carbonfiber filament & if the external housing is ever damaged or I have some spare $ & feel the inclination I might look at making/getting made one of the sheet metal designed housing for the RHINO. But from what I've seen & felt of my RHINO so far I don't think anything will be breaking anytime soon through normal usage, this thing is very solid feeling.