Posted this in r/specializedtools and heard you guys might like this. Grabber TBM used to bore Gotthard tunnel through the Swiss Alps.

Posted this in r/specializedtools and heard you guys might like this. Grabber TBM used to bore Gotthard tunnel through the Swiss Alps.
https://m.youtube.com/watch?v=PHHrHL3qUiI

There’s a spiral of 50+ spinning blades that press on the rock with tonnes of force, chipping as they go. Video if you’d like:

So what part actually grinds? Is it just the slots at the very edge?

Boring machines are so interesting and yet somehow kinda terrifying

Amazing! The part in the picture doesn't look that powerful, but all the machinery behind it shows just how powerful it is.

Ahhh yeah, I think I have an old rusty one of these lying around in my shed somewhere. A real work horse this one.

/sub/skookum

Interesting watch, thanks!

/sub/specializedtools

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