so im building iron man, and how can i be that without an proper arc reactor?

so i got myself a sheet of plexiglass, and went to work with my dremel tool and handsaw.
its not round, and i couldn't care less at the moment, since first i need 4 O.o of these rings
then well see on how to make them round.

yes i could cast the resin model aswell, saves me money, but this is just plain fun labor, i love it

(finished this ring 5 mins ago)

edit: outer diameter is 9.3 mm inner diameter is 7.8 mm
sheet is 3mm thick