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What can I do with empty laser toner cartridges? Answered

Surely there's something cool that can be done with these... I haven't taken one apart yet- but I will. 
Anyone have ideas?

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there is ,in almost all toner cartridges, a long bar magnet wich is pretty powerfull but that is pretty much all there is to get in toner cartridges.

there is also a big metal tube wich is next to this magnetic bar

Before you sacrifice them, be aware that some stores will take them for recycling, issuing you a store credit. Usually not a lot, but it helps keep cost of operation down.

Depending on the kind of toner inside, you might be able to make some ferro-fluid (Magnetic liquid)

http://en.wikipedia.org/wiki/Ferro_fluid


They can be recycled. (ork)

L

DON'T open it unless you want to spread carbon dust all over your house!!!

in addition it isn't considered good for your health.

Recycle.