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During polishing, I found some defects in the color layer.
I plan to sand and reshoot lacquer.
What's the finest grit of sandpaper that I can use?
I don't plan to sand down to wood, and my new color layer will be more opaque.
I was going for a red/black non-uniform look, (blood) but now I will do a single color.
Thanks for advice,
Dan

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Depends on the type of finish we are talking about but 600 would be as fine I as ever go to apply more finish over.

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Brian

You never know what you are capable of until you actually try.

https://www.howardguitarsdelaware.com/

Yes Dan from my auto painting past 600 wet'n'dry is your paper for this. 800 would be fine too but wouldn't go any higher in fear of not getting a good bond with the previous coat if you know what I mean.

Thanks guys, I'm using Behlen nitro.
I'll use 600 wet to try to maintain the levelling I've already done.
I figured nitro would melt into the existing nitro, but was not sure since it was polished.
Dan

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Dan, I had a similar problem with the 335 - there was a flaw in the clear coats (10 or so) but not the color underneath. I took it to a friend who paints custom motorcycles (all the flames and stuff) - he said to sand back with 400 wet and dry until the sludge turned pink (indicating that I had just hit the color layer), then hit it with 600 and reshoot the clear. I masked the area around the flaw and tried to feather the clear into the old finish but there was still a significant ridge that had to be feathered (starting with 800) before the final color sanding and buff.

Btw - if you used any wax or anything like that in your polish you know you will have problems with subsequent coats of lacquer.

Here are a couple of pictures of mine - it was a hairline crack in just the clear running from the switch (the highlight is on the crack)



after the repair