I don't know if this is the right community but here's nothing.
I am in the final process of making a cosplay for my Nephew. Its Reaper from Overwatch. I decided to split the arm pieces for printing and then fix them together with elastic so my nephew can fit them on easily and they (in theory) should slide into place. Unfortunately that is't the case.
Does anyone have any ideas on how to fix these pieces together?
Many thanks