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Feb 19, 2019 17:55:34 GMT
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i've never had much success with repainting cast alloy parts , more specifically finding the right product to stop the dreaded "white fur of shame" poking it nose out through the top coat. any recommendations for products/techniques or tips etc?
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'80 s1 924 turbo..hibernating
'80 golf gli cabriolet...doing impression of a skip
'97 pug 106 commuter...continuing cheapness making me smile!
firm believer in the k.i.s.s and f.i.s.h principles.
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ferny
Club Retro Rides Member
Posts: 984
Club RR Member Number: 13
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Re-painting cast alloy parts.ferny
@ferny
Club Retro Rides Member 13
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Feb 19, 2019 19:24:54 GMT
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I did my dolomite spint alloys four or five years ago. One got a slight curb rash three years ago but hasn't corroded.
I used a 2k acid etch in a cheap air brush. The inside and back got screwfix exterior metal paint. The face got satin 2k with water based brushed highlights, followed by gloss lacquer. Nothing has peeled (yet) and they get washed maybe once a year so normally look black.
Acid etch is the key and I've found 2k applied with an air brush gives the best result. As you can tell, once painted my care is done... and I'm throwing mismatched products together for fun. I've yet to have any flakes or powder appear on alloys, manifolds or rocker covers.
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Feb 19, 2019 19:52:14 GMT
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I don't have loads of experience but I painted all of the alloy bits of my Carlton engine with etch primer, silver base and 2k laquer, they are all spotless 2 1/5 years later. I do think that prep was the key though as they had loads of corrosion that would have come back if not removed thoroughly, so I took them to the local alloy wheel refurbisher and just asked him to clean them, they came back spotless, better than expected. I then painted them asap. imgur.com/dWnJxc6<blockquote class="imgur-embed-pub" lang="en" data-id="dWnJxc6"><a href="//imgur.com/dWnJxc6"></a></blockquote><script async src="//s.imgur.com/min/embed.js" charset="utf-8"></script> I cant work out how to add a pic, sorry, the link might show you the cleaned parts. Before cleaning had 20 yrs plus of salty water corrosion. |
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Last Edit: Feb 19, 2019 19:57:28 GMT by chris y
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