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Go Back   SailNet Community > Welcome to Sailnet > SailNet FAQ > sanding/polishing linear polyurethane paint?
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Topic Review (Newest First)
01-09-2012 03:19 PM
RichH If the area of the imperfections is not large, let the paint fully cure for a few weeks, then carefully wet-sand starting with 400 grit all the way down to 2000 grit, then power buff the surface (low speed) with a knobby foam rubber 3M pad and 3M Finese-it, then 3M Perfect-it.
To help visualize getting to a FLAT surface when flat-sanding you can use a 'guide' agent such as: 3M Dry Guide Coat Cartridge & Kit - 05861

If the paint is not fully cured, you will get 'gloss die back' .... not a problem, just wait a month or two then power-buff again as above.

Warning: flat sanding and power-buffing is the technique used to 'finish' the painted, etc. surfaces of most 'mega-expensive' boats, automobiles, aircraft ..... its extremely time & labor intensive job but if you do it 'right' you may want to 'finish' the entire job this way.

....... OR simply flat sand with 320 grit and re-paint as before.
01-07-2012 08:37 PM
Epicurean
sanding/polishing linear polyurethane paint?

I just painted above the waterline with Interthane 990 acrylic polyurethane. Some of it came out good and some has orange peel and runs. I'm trying to decide what to do now. People have suggested sanding and repainting but I'm worried that the results will be similar. I'd like to hear from someone who has polished/sanded out imperfections in this type of paint. Is it possible and, if so, what are the steps? Should it be done immediately before the paint is fully cured and hardened or after it cures?

 
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