Same or very similar stuff is used to cut plaster casts for broken bones. You see that small circle rotating next to your veins in legs and there is suddenly some tension in the room. Especially when saw seems to keep stopping when cutting through plaster for no good reason, causing some confusion for the doctor and making him lean more heavily into it.

Afterwards they realize that harder resin casing was layered with soft fabric by previous orthopedic surgeon in previous hospital, so the thing actually worked as intended (but if you keep pressing power button and leaning into it it will keep cutting). Talking about hospital equipment in Switzerland, 2 weeks ago after a nasty paraglider crash landing.

Cast saws are different, they don't affect skin as demonstrated by this youtuber with a high speed camera:

https://youtube.com/watch?v=Bx1AiQdMQro

edit: though actually I googled the skull saws which I wasn't familiar with and they might work on a similar principle, found someone talking about using them in autopsies anyway.

That's strange. Cast saws don't need to stop like that; they can't cut skin even running at full speed. Your grey matter is not as tough as your skin and you wouldn't want to touch it with even a gentle power tool, though, so it makes sense that brain-surgery saws would be different.

I'm forever grateful to the doc who actually pressed the running sawblade into his hand to prove that it's harmless, instead of just saying "don't worry, it's safe" while going to town on my leg with a power tool.

That is known as the perforator drill bit - https://www.reddit.com/r/toolgifs/comments/z2zikm/cranial_pe...

Used to make burr holes so that the dura can be stripped away from the skull using the Penfield 3 instrument.

Then what's used is what's known as the B1 with footplate to create the bone flap - https://www.researchgate.net/publication/323134344_Exposure_...

Here is an example of the drill system - Midas Rex MR8 - https://www.ebay.com/itm/125960633809

Here's a video of a surgeon performing the pterional craniotomy, probably the most common craniotomy for things like aneurysms, - https://www.neurosurgicalatlas.com/volumes/cranial-approache...

You mean the bonesaw-through-the-chest scene in Reanimator was not accurate?