PokeVideoPlayer v23.9-app.js-020924_
0143ab93_videojs8_1563605 licensed under gpl3-or-later
Views : 1,268,717
Genre: Education
Uploaded At Oct 26, 2024 ^^
warning: returnyoutubedislikes may not be accurate, this is just an estiment ehe :3
Rating : 4.953 (971/81,817 LTDR)
98.83% of the users lieked the video!!
1.17% of the users dislieked the video!!
User score: 98.25- Masterpiece Video
RYD date created : 2024-11-22T14:09:18.520956Z
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Top Comments of this video!! :3
That's how my dad used to sharpen tools in the 1950's (and almost certainly like his ancestors before him!) I was ALWAYS warned that if I dropped that stone and it broke, my life wouldn't be worth living! It was a natural stone that had been in the family for generations and was perfectly flat in the sharpening area.
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This is the idea behind every single sharpening or polishing process that uses any kind of grit to this day. Precious stones are cut with... Precious stones. Synthetic diamond grit wheels are used to cut and/or polish a stone, depending on the type and grit of the wheel. Sandstone is made of sand that has become stone over millennia... Sand is SiO2, silica, and is harder than steel is. It is able to cut tiny grooves in the steel. The smaller the sand, the smaller the groove cut. A single piece of quartz will gouge the metal, millions of tiny grit particles will do the same thing, but at an incredibly small scale. It's the sum total of the sand particles scraping at the metal that feels smooth to us. If we were the size of those sand particles, it would look like a cavernous landscape to us, jagged and uneven... But since we're as large as we are, it doesn't really matter. Cardboard would be unfathomably sharp to something like Galactus in marvel comics, even though it's uneven and ripply inside
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@jonathonschott
3 weeks ago
I once had a crap blade I was using for something and used the sidewalk to sharpen it. It did help.
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