uh? We used to have a jig or scroll saw when we were kids, it could cut thin plywood, but you could put your finger on the blade when it was working and it wouldn't hurt at all.
It had was a combined jig saw, lathe, drill press, and disc sander.
Now, I don’t know much about modern scroll saws, but the “blade” on this thing was more like a thin, round file. Perfectly adequate for something like popsicle stick thick wood. It more ground it’s way through wood than actually cutting it.
I think it would take some pressure to really hurt a finger. I can say there was no real bloodletting on my projects.
The drill bits were pointed, flat pieces of metal. It was all designed for really soft wood.
There are 4 tools and one is a finger-safe jigsaw.
I remember it as helping me develop a healthy respect for tools, and also to relate to the material world as something I can manipulate rather than something to be passively consumed. And to manage risks, and confront my fears.
https://toolsforworkingwood.com/store/item/GT-LATHE.XX/Intro...
which kind of makes me want to repurpose my wife's (unused) stationary bicycle...
Learning how to turn on one is a bit of a trick. A lot of good turning technique is body motion rather than arm motion. Standing on one foot while you treadle makes it harder to do the body motion well.
No, not all saws are the same and treating your tools like that will cause injury to yourself. Different tools have orders of magnitudes of different consequences when a blade is touched.
I've worked in multiple production and educational woodshops. I've touched running scrollsaw blades and even touched a running table saw blade and seen live a hand into a joiner. These things are no where close to being the same.
I understand you if you run your hand into the scrollsaw and try and cut off your fingers, you probably could. But in practice, that is not what happens if you graze the blade. Your hand snaps back, you may get a cut if the teeth got you, but you will mostly likely not be on your way to the hospital. Again, this is very different that other tools in a woodshop. Yes, you can cut yourself. Yes, it is much, much harder to have a serious injury.