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
Comment on Pathetic
janewaydidnothingwrong@lemmy.world 7 hours ago
Erosion is largely done by sediment being transported by the water I believe. The same principle is used in cutting water jets, it isnt the water pressure that cuts things, the water is a medium for abrasive materials
Leonixster@lemmy.blahaj.zone 6 hours ago
girlnamedzero@piefed.zeromedia.vip 6 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)
jaybone@lemmy.zip 4 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?
HerbGrower@slrpnk.net 2 hours 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.
janewaydidnothingwrong@lemmy.world 6 hours ago
😮
unemployedclaquer@sopuli.xyz 6 hours ago
As my compatriot elucidated, when we were wee morons of damn near adult age, “I could keep stabbing this pole with this piece of metal, and after many eons of stabbing, this pole would come down!”
janewaydidnothingwrong@lemmy.world 5 hours ago
huh?
StankStain@lemmy.today 7 hours ago
nerd
janewaydidnothingwrong@lemmy.world 6 hours ago
🥲