3Dprinter bed clip

2019-10-09 Ver.2 Update

I use a 1 mm copper plate instead of a glass plate that everybody uses for my 3D printer's heat bet.
Most of the bet clips made by other users correspond to glass plates, so I tried to make a clip that corresponds to a thickness of 4.5 mm.
Although it is a 1 mm copper plate, I thought that I do not need to worry about breaking unlike a glass plate, and know that I can bend and peel off when I stick too much, I want to use it.
I had you cut it into a bed size at a sh