Generic cosplay bracer

I wanted to make a bracer that could be modded to suit just about any costume need. This design as is will fit my adult skinny-ish arm. This is the left side piece just mirror for the right arm. Since people have so many different size arms I including the source file which is in 123D Design, yes I still use 123D. This design as is will fit on a prusa i3 mk3s.