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Leonixster@lemmy.blahaj.zone ⁨5⁩ ⁨hours⁩ ago

This is also how they cut rocks in ancient egypt I believe? Not with water, mind you, but would use a pretty mediocre if not useless saw but would drop sand in there, so it was actually the sand cutting the rock

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girlnamedzero@piefed.zeromedia.vip ⁨5⁩ ⁨hours⁩ ago
Yep! The would use a saw that often had a blade made of string, like a bow, but would but gritty, sandy water in the hole they were cutting to slowly grind it away. I think they would also use “dull” copper saws (don’t quote me on that one though)

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- jaybone@lemmy.zip ⁨3⁩ ⁨hours⁩ ago
  Wouldn’t the string break from the abrasive sand long before it made an impact on the stone they were trying to cut?
  
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  - HerbGrower@slrpnk.net ⁨1⁩ ⁨hour⁩ ago
    Change the string as it wears out. As long as it makes enough progress to justify the cost of the string it would be a decent choice.
    
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janewaydidnothingwrong@lemmy.world ⁨5⁩ ⁨hours⁩ ago
😮

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