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After buffing, I noticed a sanding line on the back. Can I go back and do selective buffing? That is, can I sand out the line and then buff the spot with each of the finer grits as long as I make each buffing grit a wider area than the previous area? Does this make sense? Rather than go back to sanding the entire back, then buffing with each grit on the entire back - I want to concentrate on the place that needs it. I will buff the entire back with fine grit and then swirl remover at the end...

I also have a spot on the side where I still have a little orange peel that I didn't notice until I had finished buffing. So can you do "Selective Buffing"?

...or am I asking for trouble?

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Steve Sollod (pronounced sorta like "Solid")
www.swiftcreekguitars.com

I've done that once or twice. Sometimes buffing reveals a scratch or something that was missed. I try to use only the finest grit paper that rectifies it, then rebuff that area. (This is EM6000)
(I once wet sanded a head with min.spirits, buffed & saw weeks later that around the tuner holes had gone "pebbly" on the rear, which I took to be slurry penetrating the endgrain at the holes. Two lessons ......sand head almost dry,...and resanding /rebuffing selectively later works fine.)

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Dave
Milton, ON

Yes, you can do that, depending on the finish.
What do you mean by 'sanding line'?
If you have a catalyzed finish, where one coat doesn't burn into the last one, but sits on top of it, you may have a witness line from sanding through the topcoat into the basecoat. In which case your sanding line will just move around with more sanding and buffing.
What type of finish is it?

As Dave recognized from my previous posts, this is EM6000. I had noticed swirl lines which I assume was from sanding in a circular motion. I then sanded with the grain to get rid of the swirl lines and that worked. I noticed however, upon buffing that there was a "swirl line" that I had missed. That's why I want to fix this and selectively buff this area. I think I will need to go back and sand the area of the swirl line to get rid of it and then buff the area. I just don't want to go through the finish...

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Steve Sollod (pronounced sorta like "Solid")
www.swiftcreekguitars.com

Yeah, you gotta be careful for sure. But, if there's enough finish for there to be scratches in, you should be able to get it out!