Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137
Painting and rust
A few years ago I found rust under the front roof rail covers, just after the windscreen. I sanded down and repainted.
The rust has come back through the paint and I was intending this year to get it professionally done, but having been made redundant in February then Covid came along, I'm going to have to be careful with money until another job is found (not an easy concept as the job market has probably now completely changed). So now I'm going to have to patch it up again myself.
So whats the secret to succesful filling and painting to ensure that rust doesn't come back?
10th May 2020 11:34 am
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20731
Back to bare metal, remove all traces of rust, or use a rust converter My D3 Build Thread
Member Since: 14 Nov 2019
Location: Usk
Posts: 401
I agree with DM.
Not strictly necessary, but I think self etching primer over bare metal is more effective than high build. If you are going to use filler apply that to clean bare metal. Do not use filler over self etch primer, unless appearance is unimportant.Chris
10th May 2020 1:19 pm
NickJ
Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137
So filler then primer, rather than primer then filler? Is this the case if using normal primer?
10th May 2020 1:22 pm
motorworks
Member Since: 14 Nov 2019
Location: Usk
Posts: 401
Metal-Primer-filler or
metal-self etch-primer-fillerChris
10th May 2020 1:33 pm
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1783
As DM said, rust converter is the secret
11th May 2020 4:31 am
Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815
Disco_Mikey wrote:
Back to bare metal, remove all traces of rust, or use a rust converter
This the red line indeed... back to bare metal; you can buy a blast gun with rubber nozzle to blast a very small spot and without damaging the surrounding paint. You can Even do that with baking soda
Not very expensive (A few tenner) for such a gun but you need to Use a compressor...
Blast gun, Like this one:
Then apply the rust converter and then apply the layers of primer and paint.
If you get sloppy on the bare metal part?, next year you can do it againBest regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
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