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One for the patina fans..

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One for the patina fans..
rust stabilised ( hopefully..) with Loctite 7503... turns the brown stuff black.
Posted by melofelo on July 25, 2017 Full Size|

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Reply melofelo
9:53 AM on July 29, 2017 
Fantastic advice Dave.
I've never tried Oxalic acid before but will definitely give it a shot next time around.
I've got another Newpin to tackle soon which is in much better condition but it does have some very mild surface rust in the paintwork in a few places that I would like to treat before sealing with lacquer.
The loctite rust conversion treatment works pretty well and can be painted over without primer but it can be more unsightly than the actual rust on lighter coloured frames once it turns black.
This early Dawes / Newpin Blue is also my favorite blue but difficult to match..especially after decades of fading in some areas ...which makes it even nicer to look at...
Will try and source something similar from halfords for a few touch-ins before tackling the next one...
Reply davepalk
9:39 AM on July 29, 2017 
Have you ever investigated Oxalic acid? It dissolves iron oxide (brown rust) but doesn't hurt paint, transfers or chrome. It's very popular amongst the vintage BMX community for transforming rusty chromed frames and components. The only thing you have to watch is that it dissolves zinc, so brake calipers have to be stripped of their hardware before soaking. It's cheap and very effective. It's primary use is to bleach stains out of wood and clean fibre-glass boat hulls. Google it.