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There's a few 3D printable corner cut jigs out there. I designed my own for three main reasons:
https://makerworld.com/en/models/2000894-corner-cut-jig-with-ruler-for-bookbinding#profileId-2154412
Sheesh, some people are always looking to cut corners...
I like this.
My three main reasons:
Design
Colors
Usefulness
If I can get my hands on a 3D printer, this will be really handy. Ty!
They look like neat shades
@d13 I've no idea about bookbinding but I know someone. This could be a Christmas present. Could you give me some more information regarding the usage?
Absolutely. When you're making a book cover, a pretty typical method is to take book board (chipboard-like material, similar to the back cover of notebooks) and glue it on book cloth or paper. Then you fold over edges of the cloth/paper. You don't need to cover the inside because that's where the actual pages of the book will be, but you need some overlap (e.g. 25mm).
But the corner is a bit tricky. If you don't trim at all, you have an extra triangle of folded paper that gets in the way. If you cut it off too close to the book board, you will see the board peeking through. So you want to cut the corner off with a little gap. And if you get the angle wrong, the fold doesn't look quite right. This jig gives both spacing and angle, and it has an added bonus of the notches to let you mark your cuts for the fold over on each side.
The first 30 seconds of this video illustrate it pretty well: https://www.youtube.com/watch?v=N4IzpDqbHqU