For it, you'll need access to a laser cutter.
Step 1: Gather your materials!
In this case, I'm using some really beautiful, semi-glass, very heavy paper (this is typical for what would be used to bind paperback books with a white cover.):
I love calipers, and used them to find that this paper is 0.83mm (probably closer to 1.0mm) thick.
(I love this paper)