Coin... shrinker?

My question too.

So how it works is... you take a coin, pinch it between two pieces of dowel, to keep it from squirming, and then wrap 5 or 6 turns of wire around it.

Then you discharge a capacitor through the wire coil. That will create a magnetic field, and induce a current, with its own magnetic field, in the coin. The two magnetic fields repel each other, and that generates a force pushing the coil out, and the coin in. So the coin's diameter is reduced, but it gets thicker. So not truely shrunken, but still neat. The force is suprisinly even, the image on the coin is intact. (I'll post another picture)

The exploding rays in the image are (were?) the coil.

My capacitor is about 230 uF, and it is charged to 11000 volts, so about 14 kiloJoules of energy. It is an extremely low resistance pulse capacitor, and weighs about 330 pounds.

I don’t think that’s how shrinking is supposed to work.

Some strinking is more... entheusiastic. (-:

Ahhh, neato! Did you just shrink them, or did you get a toroid?

For those who don't know, this is a coin shrinker.

They were just shrunken... The best I've ever done was turning an aluminum arcade token (very soft, very conductive) into an almond.

sparky sparky.

More like Boom...
Isn't the Z machine in your neck of the woods? (-:

Yup! Same energy as several sticks of TNT into a set of wee tiney wires that pinch to create about 2.7 megajoules of x rays ;)

The mad scientist at work again!!

"Remember kids, I may be mad, but I am still a professional." (-:

In other words, "Don't try this at home."

as a side note

"Closed course with a professional driver" does not apply to the local rednecks driving Mustangs and other muscle cars.