Author Topic: Surface rust repair  (Read 1661 times)

Offline kj4ltc

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Surface rust repair
« on: November 14, 2018, 09:18:02 PM »
I’m getting ready to paint my truck, the top of the cab has some light surface rust.  What the correct/best way to repair this?  I will be coating with 2k filler primer and base/clear.
« Last Edit: November 14, 2018, 09:37:40 PM by kj4ltc »

Offline VileZambonie

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Re: Surface rust repair
« Reply #1 on: November 15, 2018, 04:32:45 AM »
Start by sanding it and removing all of the rust.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Mr Diesel

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Re: Surface rust repair
« Reply #2 on: November 18, 2018, 08:40:05 PM »
Body shop / paint guys will probably be appalled at me for saying this, but I would just sand it with some 120/220 grit paper to scuff it and remove any flaking rust and then spray that 2k primer right over any surface rust. Once you prime it, base coat it, and clear coat it nobody will ever know or care what the base metal looked like.

I've been doing this for about 14 years with Nason 2k primer filler and base/clear and have never had rust come back through. I even tested spraying just clearcoat over bare rust on a piece of metal. That piece of metal has been sitting outside in the weather for years and looks exactly the same as the day I sprayed it with no further rusting. The clearcoat sealed it and completely stopped the rust.
1976 C20 Crewcab, 6.2L/SM465
1982 K30 Crewcab , 427TD/TH400
1983 C30, 6.2L/TH400
1983 K30 Crewcab 454/700R4
1986 K10 350/400. 1989 K30 cab/chassis 454/SM465

Offline VileZambonie

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Re: Surface rust repair
« Reply #3 on: November 19, 2018, 05:01:12 PM »
 ???

At least use a rust converter! Don't paint over rust
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10