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Cake day: June 30th, 2023

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  • Wogi@lemmy.worldtoxkcd@lemmy.worldxkcd #3047: Rotary Tool
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    5 months ago

    I occasionally run a lathe at work. The big CNC one says it will do 10,000 rpm

    If you ever run it that fast, the jaws will start to separate and the part will come flying out at Mach 4, bounce around the inside of the machine for several minutes, destroying the chuck, all the tooling, and the chip conveyor in the process.

    Another fun fact, these machines go from 5000 rpm (the fastest you’re assuredly safe to run it) to 10 at the snap of a finger and back up again. All of that energy has to go somewhere. So there’s a heat coil, pretty much identical to the one in your oven, that takes all that extra energy. It doesn’t normally get all that hot, but if you’re running a lot of parts with a lot of diameter changes, it can get hot enough to glow.




  • The rock is quite useful as an industrial tool. It’s when you cut it in to a fancy shape and wear it that it’s pretty useless.

    We use diamonds to test the hardness of materials, grind really hard things smaller, orient and locate specialized cutting tools, and cut through really hard things. Hell we sell garnet by the barrel to help cut through regular materials. Orderly carbon or, in many cases orderly aluminum oxide, is something we need a lot of. The price going down on those is actually good for manufacturing.








  • IS going to run out of water. Not HAS run out of water.

    And we know. We been warning yall fucks for years that the aquifer ain’t filling back up and gotdangit they just keep paying us to grow corn on land that ain’t suited for growing beans. And everybody knows corn and sorghum ain’t no good for the soil neither.

    Joking aside, we’ll deal with that impending apocalypse like we’ll deal with all the other ones. By pretending it isn’t happening.









  • Nonsense. I oppose the death penalty for almost all crimes. It’s just too easy to render an inaccurate verdict, and you can’t undo an execution.

    But we don’t have any doubt about billionaires. They’re verifiably guilty beyond any shadow of a doubt.

    I also think they should be able to avoid the death penalty by giving up their wealth and living on minimum wage for a number of years equal to the number of billions they captured and withheld from society.