Concrete drilling with large holesaw - GIF

Concrete drilling with large holesaw.

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Previously:

CNC drilling a long hole - GIF
Core drilling a wall - GIF
Directional drilling mole - GIF
Drilling a tunnel with a hole saw - GIF
Drilling a well and installing rings - GIF

Obviously fake AI...

Well the first thing is that is obviously not a concrete wall!

Yeah, looks like steel. Must be a battleship refit...

Not steel, there is some clay sectional block lathe behind the first 2" which might be cement but definitely not concrete.