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This rusty metal part lives underneath the mudguard on my motorcycle,
where it gets sprayed with water and muck all day long. After 12
years, it's in a sorry state. One of the bolts which holds it onto the
bike sheared off when I tried to remove it. I had to use all of the
tricks to get the remainder of the bolt out (penetrating oil, leaving
it for day, heating it, hitting it with a hammer, hacksawing a groove into it, impact driver and lots of
patience).
Anyhow, rather than sticking it back on the bike (and thereby storing up trouble for next time) I thought I'd apply some science - electrolytic rust removal. Impressive name, but all it involves is a bucket of water with some soda crystals in it, and a bench power supply whose positive terminal is connected to a 'sacrificial' lump of steel, and whose negative terminal is connected to the rusty part. Half an hour later, and the result is .... |
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