I got my first ever 3D printer for Christmas and I had this idea for a while. By no mean is it perfect, but its my first time using tinkercad. i opened up the umc22 out of curiosity and was surprised by how much wasted space there ways. in the photo's i did wrap it to make it look more sleek. i used PLA, but YMMV with other filaments. IT IS PERFECT, may be off by .1-.5 mm. please feel free to fix but I'm happy with how it turns out for me.