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Cabinet and Chassis Restoration and Refinishing For help with cabinet or chassis restoration (non-electrical), please leave a message here. |
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2nd Oct 2016, 6:39 pm | #1 |
Hexode
Join Date: Mar 2009
Location: Cirencester, Gloucestershire, UK.
Posts: 391
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Chassis colour after anti-rust treatment
I tend to use Kurust on rusty chassis, after a rub/brush down to remove most of the surface rust. However Kurust leaves the metal a very dark colour which I presume is the colour of the chemical it turns the rust into. Does anyone have an alternative treatment that doesn't result in such a dark colour.
I guess I could paint over the dark colour, but I'm not a fan of grey painted chassis when the original finish was probably a nickel plating. Is there a paint that produces the dull metal finish of original nickel plating? best regards .... Stef |
2nd Oct 2016, 7:14 pm | #2 |
Banned
Join Date: Dec 2013
Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
Posts: 3,897
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Re: Chassis colour after anti-rust treatment
Alloy wheel refinisher?
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2nd Oct 2016, 7:17 pm | #3 |
Dekatron
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 4,935
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Re: Chassis colour after anti-rust treatment
I believe that most of the rust treatments produce metal phosphates on the surface, and all the ones I've ever used left some discoloration. The new Jenolite products say that if the metal hasn't turned blue, repeat until it does.
If you are going to keep the chassis in a dry atmosphere in future, you could remove the phosphate (wire wool?) as it should have neutralised the existing rust. Perhaps you could then spray the chassis with WD40 or a coat of varnish? I don't think I've ever seem a paint that gave a convincing "metal finish" appearance. B |
2nd Oct 2016, 8:49 pm | #4 |
Dekatron
Join Date: Feb 2005
Location: St.Ippolyts, Hitchin, Hertfordshire QRA IO91UW
Posts: 3,518
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Re: Chassis colour after anti-rust treatment
You could try cold galvanising spray, which gives a fairly pleasant mid metallic grey colour, and not at all glossy.
Or, Halfords sell a "weld thru primer" that is a zinc loaded primer coat, used for edge preparation prior to welding - this is a fair bit lighter in shade, and replicates the colour of coated steel quite well.
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Engineers make things work and have spare bits when finished |
3rd Oct 2016, 9:09 am | #5 |
Hexode
Join Date: Mar 2009
Location: Cirencester, Gloucestershire, UK.
Posts: 391
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Re: Chassis colour after anti-rust treatment
Thanks for the most helpful comments. I think I'll try the 'weld thru primer' and see what the finish looks like.
best regards ... Stef |
3rd Oct 2016, 10:22 am | #6 |
Heptode
Join Date: Oct 2015
Location: Gloucestershire, UK.
Posts: 720
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Re: Chassis colour after anti-rust treatment
You would be better removing the rust in its entirety. Either wire wheels, or best of all, shotblasting will remove all traces of it. Then if you wanted to seal it, a coat of matt lacquer would do that, else leave it as nature intended.
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3rd Oct 2016, 6:07 pm | #7 |
Dekatron
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 4,935
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Re: Chassis colour after anti-rust treatment
Agreed, that wire wheels are a good way to go to get the great bulk of the rust off. The problem is that corrosion very often includes some pitting; very localised, very deep attack, which you probably wouldn't even see (by eye) after the brush or blasting. And it's the pits where it gets started again (like magic), but the best chance of dealing with the pits is something like a phosphate treatment.
B |