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| Thread ID: 138966 | 2015-02-17 01:08:00 | corrosion cleanup | PPp (9511) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1394534 | 2015-02-17 01:08:00 | We have been given an alumium alloy bird bath that has seen better days. My wife has a good place for it, but your's truely has to clean it up and make it presentable. The corrosion is pretty deep in places and there is extensive pitting underneath. So I thougt to use a wire brush in my drill on the rougher parts and wire brush the rest by hand, maybe some sandpaper for the smoother parts? Thought I might get some help from you guys first, in case I was making a big mistake!! | PPp (9511) | ||
| 1394535 | 2015-02-17 03:38:00 | pour mercury over it. The issue will dissolve before your eyes. :-) actually, dont :-) perhaps just bog & paint it ? |
1101 (13337) | ||
| 1394536 | 2015-02-17 04:35:00 | Brass wire wheel might be best. | Whenu (9358) | ||
| 1394537 | 2015-02-17 04:43:00 | avstop.com | pctek (84) | ||
| 1394538 | 2015-02-17 05:01:00 | The problem with pcteks website is that you wouldn't easily get access to solutions like sulphuric and chromic acids, sodium dichromate and chromium trioxide etc. unless you work at the right firm. :) My advice would be to find a firm that does grit blasting or bead blasting to get the aluminium down to bare metal. Then etch for a very (very) short time in caustic soda solution, then wash thoroughly in hot water. The aluminium can then be sprayed with ClearKote or similar or just painted. Caustic soda dissolves aluminium, so it is important not to forget and leave it in there, or you will come back and find it gone :banana |
Terry Porritt (14) | ||
| 1394539 | 2015-02-17 06:42:00 | "pour mercury over it. The issue will dissolve before your eyes." Do I really have to sarcrifice my eyes for my wifes birdbath?? :-) Seriously though, thanks for the tips. I'll experiment with your advice and wear some eye protection.:nerd::thumbs: |
PPp (9511) | ||
| 1394540 | 2015-02-17 17:53:00 | The problem with pcteks website is that you wouldn't easily get access to solutions like sulphuric and chromic acids, sodium dichromate and chromium trioxide etc. unless you work at the right firm. :) www.brucescientific.com |
pctek (84) | ||
| 1394541 | 2015-02-17 18:33:00 | Mag wheel cleaner. | R2x1 (4628) | ||
| 1394542 | 2015-02-17 20:58:00 | www.brucescientific.com No mention of chromic acid or the other nasties etc etc on that site, only solvents which will not remove aluminium oxide corrosion. Grit blasting is the easiest for a one off job. Edit: and if you paint then an etch primer for aluminium is best before the finish coat. or you could get it powder coated which I used to do for most of my home brew electronic cases. |
Terry Porritt (14) | ||
| 1394543 | 2015-02-17 22:03:00 | Might work out easier to get the birds dry cleaned? | R2x1 (4628) | ||
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