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[solved] Springy thingy found outside
(lemmy.world)
It looks like some sort of wiring inside
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this post was submitted on 21 Jul 2025
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What is this thing?
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Every brush is a carbon brush.
A steel wire brush isn't.
I was initially going to say "my hairbrush isn't", but I forgot plastic is largely made of carbon, so you's still be right.
And how do you make steel?
Well, you take iron ore, heat it up, and add, uh...
As iron, unlike gold isn't a noble metal, an important aspect is, you need carbon to make ~~pure~~ iron from the iron oxides in the iron ore: The carbon will react with the oxygen and ~~pure~~ elementary iron and carbon oxides are left.
Pure iron is somewhat soft. To make steel, you typically add extra carbon to the iron, which results in a harder (though more brittle) metal.
Essentially, you reduce the carbon content of the raw iron by blowing in oxygen until you have the desired amount of carbon left. I should have written 'elementary' iron instead of pure.
Lots of smaller brushed motors use brass or bronze brushes. Slower moving mechanisms use a variety of materials.
Happy cake day!
Woah, I didn't even know. Thanks! 😁