this post was submitted on 23 May 2026
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You go fire - > kiln - > charcoal - > furnace - > steel and copper - > permanent magnets - > electric motor.
The tricky thing is that you need a naturally occurring magnet (lodestone) to make the first steel magnet. If you happen to have a magnet on you you can do heat treatment of the steel, rub the magnet to align the atoms and get yourself a better magnet.
After you got the electric motor you both have a generator and a motor easy peasy.
So you have any idea how hard it is to make wire consistent enough to make the windings? There's a reason that wire wasn't really a thing until the 1700s at the earliest.
The wire part of that isn't trivial. They were pulling wires in the middle ages for holding armor together, but high volume and specialization didn't come until the Renaissance. Good insulation pretty much requires plastics. Wax could be used before that but it's not as good. Your early motors will have shorts that reduce power or kill it entirely.
I died of simple infection while building the kiln. No antibiotics.
Moldy bread.
Pretty sure you can't just eat mouldy bread and be cured of your infection. You have to isolate and multiply it.
Actually, you just slap it on the wound.
You can use chemical batteries to create electric current without magnets.
You can also create weak permanent magnets by just hitting iron with a hammer.
Looked it up, this looks the easiest to tech up. You still have to heat it up to a dark red color, align it north to south and then hammer. It uses the earth's magnetic field to magnetise.
Then tech up to stronger steel magnets.
You forgot the water. You need water to boil.