Mildly Interesting

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Thermal image of cutting a metal bar with a hacksaw (media.piefed.social)

submitted 5 days ago by pageflight@piefed.social to c/mildlyinteresting@lemmy.world

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The bar is clamped in a metal vise, so the vise is very slightly heated and that side of the bar is much cooler.

Taken using the Topdon Android attachment.

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[–] Swedneck@discuss.tchncs.de 7 points 4 days ago (1 children)

i genuinely think schools should teach you that metal can get hot like this, it never occured to me until i was using a drill to screw in a screw and it slipped a bunch, then i went to touch the screw..

nice + shaped blister right on the middle of my fingertip :)

[–] Buddahriffic@lemmy.world 1 points 4 days ago

You can drill through glass but you need to water cool it (just run water over it as you're drilling).

I used similar water cooling when I drilled a hole through my stone countertop to add a new tap, though I'm not sure it was necessary.