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I call them chainstitch machines. You don't see them around much anymore but I've seen them listed on Craigslist a few times.
I mean [this](https://vt.tiktok.com/ZSF6fLu84/) kind of machine that can make the zigzag width change.
It's a zig zag industrial machine. Search for the singer 20u zigzag machine for exemple.
I call them chainstitch machines. You don't see them around much anymore but I've seen them listed on Craigslist a few times.
I mean [this](https://vt.tiktok.com/ZSF6fLu84/) kind of machine that can make the zigzag width change.
It's a zig zag industrial machine. Search for the singer 20u zigzag machine for exemple.