How much sanding is enough before painting?

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How much sanding is enough before painting?

Post by betanceiro on November 7th 2013, 3:37 am

Hi there, after doing metal and puty works my little truck is ready for paint, but before painting I'd like to apply one or two coats of primer. So, before apply primer I'll sand the existing paint so the primer fix better.


The question is, how much should I sand? Is enough just when the existing paint is opaque or should I go a step further and sand until remove the paint and the first primer coat is visible?

Thanks in advance and regards from Galicia, Spain.
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Re: How much sanding is enough before painting?

Post by Samilcar on November 9th 2013, 2:10 pm

If the existing paint is sound (not flaking, peeling, or having other adhesion problems), just scuffing the paint is enough, no need to remove all existing paint down to the primer coat.
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Re: How much sanding is enough before painting?

Post by betanceiro on November 14th 2013, 2:51 am

Thanks Samilcar, as the existing paint is not too bad (even it brights as is seen on pic) i'll sand just over until the bright disapear.
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