This is the right bracer for Aloy's armor from horizon zero dawn. It is sized for my 5yr old daughter and I'm working on the other one. The goal is to print this flat, then make two bends to fit the wrist.
I didn't have time to design the second one, so I just mirrored the part. After printing this I placed the piece on a wood form and in the oven for 5 minutes at 200 degrees so make it pliable. Then pulled it out of the oven and pressed down onto the form to get the bends in the plastic.
Designed using fusion 360 with the cosplay guide used as a canvas to sketch on.