Best way to deal with nibs in clearcoat spray?

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Joined: Mon Feb 13, 2023 5:18 pm

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PostPosted: Thu Mar 30, 2023 9:41 pm

Respraying a bumper, onapplying clear coat some blurted out and formed nibs, I believe this could have been caused by dry clear coat being stuck in the gun beforehand or hitting a fly while I was spraying.

What is the best solution of rectifying this?

Do I ignore it and prepare to buffer/polish? I plan to wet sanding down to 1000 anyway then back up to 3000 before compounding. Will this erase the nibs?

Should I sand down the nibs with 800 then reapply a final layer of clearcoat?



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PostPosted: Thu Mar 30, 2023 10:34 pm
Ahhh, the old "Oh no, I didn't clean my gun properly".

It looks like there may be more than just clear in those "nibs". Did this happen in the final coat? If so, you may have a chance of sanding them out. If it happened in the first coat then you have Buckleys and will need to sand back and respray.

You probably won't know until you try to fix one. I'd be reluctant to go to P800, but might try P1200 wet on a very hard, small block.

There are numerous ways to deal with paint nibs, where the foreign object is sitting on or near the surface. I usually use a damp P2000 Trizact type 75mm disc on a Metabo DA and then just buff the resultant haze out.

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