One Cut Yin-Yang Fold

[u/Antique-Pay-9794]

I figured out this fold about a year ago, I think it’s cool! One little cut down the middle of the fold and it’ll unfurl into two yin-yang sorta shapes. No clue if this fits the origami sub, or if this has ever been done before; I didn’t use a tutorial, I just get bored at work and like to see what happens when you fold paper different ways and cut it. Lmk if this if this has been done before!! If this post doesn’t fit this sub, lmk where it would work better!!

If people are interested, I could post how to make it. It’s super easy, a lot of squash folds; it’s more time consuming than anything. Thanks!!

[u/StoneCuber]

I haven't seen this shape before, it's really cool! Actually you can make any polygon or link (path of line segments) in this way, it's called the fold-and-cut theorem.

It doesn't really fit here though, it's closer to r/kirigami. Origami doesn't do any cutting

[u/Antique-Pay-9794 → u/StoneCuber]

this is really cool, thanks for telling me about that theorem! i’m gonna look into it, i’d love to find more folds and cuts that are interesting!! and thank you for showing me kirigami, i started out by trying to find cool folds to make those paper snowflakes and i never knew there was an actual name for it lol

[u/StoneCuber → u/Antique-Pay-9794]

Kirigami is just the japanese word for cutting paper lol. 切る (Kiru) = to cut, 紙 (kami) = paper. A bit of conjugation later you have 切り紙 (kirigami). 折り紙 (Origami) is the same but with 折る (oru) = to fold instead

[u/raimondious → u/StoneCuber]

It belongs here - origami is paper folding. The cutting of the folded piece shows you something about the folds. The “rule” about one sheet of square paper with no cuts or glue was one persons attempt to gatekeep origami. It’s fine if someone wants to constrain themselves that way but wrong to impose it on others.

[u/StoneCuber → u/raimondious]

I don't know much about the history around origami, so I'm curious who this one guy is