The rollers and treads were printed attached to the side of the body, and you couldn't see through the treads below the main body. Therefore I cut the treads off both sides, sanded them back and opened them
The whip aerial at the back looked a bit thick so I cut away part of it and added steel wire (I also later added a bit of brass tube over the bottom part of the wire)
This is a 3D printed kit of the Treadwell droid from the original Star Wars. Made by Figureworks (I think they are only on Facebook), its a nice simple kit but it was a limited run, so I'm not sure if its still available. I made some modifications to it as I didn't like the way the treads were molded to the main body. It was built mid last year but I only just took the final photos.
