In these series of posts I outline the process of building an R2D2 at a scale close to the one original built for the first episode of the Star Wars saga,
You tape the thin layers of plastic down before gluing them down. Multiple layers of thin plastic are about as strong as a thicker layer.
The plastic is glued with something called Weldon. Its mostly MethylChloride and some equally evil and highly toxic chemicals.
You do tend to end up with bits of plastic left over.
No I don’t tend to use O2s as door stops that one had just been moved out of the way of something else at the time.