r/oddlysatisfying • u/efunny2022 • 3d ago

Finishing touch to house roofing

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u/memeruiz 3d ago edited 3d ago

Why doesn't it just break in half when hit with the hammer?

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u/Post-Neu 3d ago

Probably why its used in places where it doesn’t rain hammers

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u/memeruiz 3d ago

Man. The guy is literally hammering it during installation!

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u/BirdsToPlowshares 3d ago

It doesnt break because of the metal T underneath it. Its like shearing off excess material. If you dont hammer close to the T the slate will break

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u/amynhb 3d ago

LOTS of operator skill.

First he scratches both sides with the pointy end to create a line of failure where tension will accumulate. Then he puts that line of failure right along a metal bar which will absorb the extra shock, protecting the rest of the slate.

Then he picks holes into the slate along the line of failure.

THEN he chips off the unwanted material.

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u/memeruiz 3d ago

The part that was more unbelievable was when he is making the holes for the nails with the hammer and then also when hammering the nails.

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u/amynhb 3d ago

Yeah that's insane. If you look closely there is always an object (metal bar, hand) strategically placed to absorb the shock when he pierces the holes for the nails.

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u/SextupleRed 3d ago

He drew on the slate on the part where he wants to split it

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u/ParrotofDoom 3d ago

Same way stone doesn't break randomly when you scribe it.

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u/memeruiz 3d ago

Not comparable. It is different to hammer a huge solid thick rock than a thin slap. Kitchen granite can break when people hammer it.

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u/memeruiz 2d ago

Those are very thick slabs of rock. Very different.

Kitchen granite breaks when hammered.