New way of making a ferrofluid. Costs less than 3$!!!

Step 2 Prepare tapes

Tape:
The tape itself is actually very simple. It consists of a thin plastic base material, and bonded to this base is a coating of ferric oxide powder. The oxide is normally mixed with a binder to attach it to the plastic, and it also includes some sort of dry lubricant to avoid wearing out the recorder.

Ferric and iron oxides:
Iron oxide (FeO) is the red rust we commonly see. Ferric oxide (Fe2O3) is another oxide of iron. Maghemite or gamma ferric oxide are common names for the substance.

More info how tape work:
http://electronics.howstuffworks.com/cassette1.htm

Procedure:
We need separate Ferric oxide from plastic tapes. Acetone will melt binder and separate Ferric oxide. But first we need to smash and break tapes!

Comments

[TheRealDutchOwner]

Never do this to a tape that still works. If you do, i'll be around your home tonight... Just kidding, but never use working tapes. VHS? Go ahead, they still make them.

[magnet18]

most rust is actually fe2o3, dosen't change anything, just sayin...

[ampeyro]

do you think this could be done with the dust from cutting steel with carbon discs?

[oniony]

Or we could just remove the tape from the casette? Guess this way is more fun...

[Zujus]

After third tape you will start think different. ;D