paint over rust treated areas

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wilma
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paint over rust treated areas

Post by wilma » Wed Feb 27, 2008 8:30 pm

Hi, im a relatively new capri owner and very new to maintenance but recently wanted to try treat the rust areas of the capri i bought. I treat the areas all over and managed to find the correct match spray paint and also a clear lacquer to start the respray of rust treated areas but the small area i have tried has a rough feel to it, not like the smooth feel of the rest of the car - what am i doing wrong?

Am i applying too much paint maybe?? I am doing as the instructions says and applying approx 3 coats and spraying from approx 25cm away and then applying the lacquer in a similar way. Any help would be much appreciated.

Wilma



demo2
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Post by demo2 » Fri Feb 29, 2008 9:00 am

Sorry to say this but rust treatment is a short term fix, the rust will re-appear. Only way to fix it properly is to cut the rust out and put fresh steel back in.

chiefcapri2.8
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Post by chiefcapri2.8 » Fri Feb 29, 2008 3:08 pm

Hi Wilma, unfortunately as demo2 says spraying over the rust is only really a temporary fix, you really need to remove it to cure it. However, being a former paint sprayer i might be able to give you this advice. You'll never get the right match out of a can, aerosol spray is 'cellulose' based whereas proper car paint is '2-pack chemical' based (or if you want to get technical with new legislation all new car paints have to be 'water' based but this is getting off the point). If you are doing a panel by aerosol, it'll be best to try and do the full panel (door, wing, bonnet, etc) otherwise the paint won't blend properly and you'll end up with a raised, dusty edge to the area you've sprayed. If you're spraying a full area and still getting a dusty surface then the plain fact is you're not putting enough paint on! It's a very fine line but to get a smooth paint surface the paint must go on 'wet'. That is to say when you look across the panel the paint looks wet and shiny, it'll probably look a bit darker than require but should dry lighter. You need to achieve this 'wet' look without putting on TOO much paint and getting runs, unfortunately it is a very fine art (hence why spray jobs cost such much!) The best way sometimes if possible is to take the panel/door off the car and lie it flat on a table and spray it.
I'm sorry it's not more helpful advice, but a home-done spray job is never going to last or look right, the best you can hope for is to cover the rust, have the car look a bit patchey for a while whilst you save the money for a proper job!
Regards,
Keith

wilma
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Great reply

Post by wilma » Sat Mar 01, 2008 11:45 am

Many thanks for that reply, its great to hear some advice from someone which practical experience in this area. I think i will do as you say and go ahead then and have a slightly patchy car for now but at the same time look into having a proper paint job done afterwards. Im glad to hear it wasnt just me making a real botch job of this.

Thanks again. Wilma.

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