It looks like some sort of wiring inside
this post was submitted on 21 Jul 2025
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What is this thing?
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But it is in fact a carbon brush nonetheless
Yeah. Apparently they do look exactly alike:
https://cdn.shopify.com/s/files/1/0067/8582/6887/products/Bosch-2604321904-Carbon-Brushes-B310-CSB-400-2-CSB-420-E-CSB-420-to-fit_22cd18af-c174-4ad6-9db4-d391f9955362_1024x1024@2x.jpg?v=1591282643
What are their purposes?
The brushes glide along the commutator and transmit the electric current to the rotating armature (Anker) in the motor.
Quality reply! Appreciate you taking the time. :)
This is the first time I've bothered learning about this. Thanks!
Never to late to learn!
Aha, thanks. I wonder how it ended up in a park.
Fell out, either from a destroyed tool or simply fell out, as they're held in with a simple screw cap.
Could've also fallen/dropped by someone who repairs such things, as it's sometimea an easily replaceable part.
To make an electrical connection to a moving (rotating) part.
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.
To be fair, I'm only "right" pedantically. 😂 My understanding is rocks and minerals aren't mostly carbon, but still contain it...
And how do you make steel?
I don't. I have people to do that for me.
(But to answer your question, with a small amount of carbon, sure, but in my opinion that doesn't mean that steel is "made out of carbon" any more than we would say humans are made out of iron)
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.
Happy cake day!
Woah, I didn't even know. Thanks! 😁
Lots of smaller brushed motors use brass or bronze brushes. Slower moving mechanisms use a variety of materials.