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So you cut a one meter-deep circle in a chunk of rock. How do you get that circle removed? The back is still attached to the rock behind it.
by dhosek 2y ago
So you cut a one meter-deep circle in a chunk of rock. How do you get that circle removed? The back is still attached to the rock behind it.
- floxy 2y agoBore deep enough that the weight of the cantilevered piece breaks off. Or use additional leverage to break that chunk off.
- thecopy 2y agoAnd then falls on the drill, making it stuck and bends the attachment. This is a solved problem: https://en.wikipedia.org/wiki/Tunnel_boring_machine https://en.wikipedia.org/wiki/Tunnel_boring_machine