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New way of making a ferrofluid. Costs less than 3$!!!
PC remote control
How to fold T-shirts in 2 seconds
bigger magnets make bigger fields ..and are usually stronger out of size im guessing.
Nail polish remover is acetone, its pretty benign. However there are a couple issues here first Fe2O3 is red rust, FeO is black. The black FeO is generally whats in ferrofluid but its expensive hence the tapes (great idea). I have been trying VHS instead of cassette (more FeO) but acetone is not eating the plastic. I could purchase some solvent like DMSO but i might as well just buy the FeO then. I tried gasoline no luck, wondering if there is some type of coating on the tapes that needs to be stripped (can't reason why it would be impervious to gasoline) but I was thinking of pre treating in bleach then back in gasoline. Anyone have any experience pulling this stuff from VHS? Maybe the gasoline is just super slow so I could heat it but I am not crazy about that idea for obvious reasons. Any assistance internet?
Steampunk tube magnets will rock your world!
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