Thanks for the reply!
The printer he uses at his work uses some type of plastic. We have some stuff here that he printed before and it definitely isn't absorbent at all.
I know the one shown would be too small, but my fiance wouldn't have any trouble scaling it up for me.

I have lizards too, and I know some people use the 3D printers to make hides for their lizards. I've seen the printers used to make pet
toys, dog bowls, and such as well so I assume they'd be pretty easy to clean. I've never personally used any of the 3D printed stuff for any of my pets though.
To be honest I already have a wheel so I don't really need one, I just thought it looked interesting. I might have him make me a few hides for my geckos before anything for gliders. Then I can better test how it holds up to washing and pet nails.
But I'll see if I can get some more information on exactly what type of plastic is used first.