Originally Posted by mick53
If it's a stirring bar what would be the purpose of iron filings vs an iron bar? I'm not saying it's not I just don't see why. They need to be evenly distributed to work.

Glass doesn't react with chemicals like a piece of metal would. Bill, mild steel doesn't retain much, if any magnetism- - - -like the pole shoes in a starter or generator. Once the magnetic field goes away, the steel loses virtually all its magnetism.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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