Hey guys,

thanks so much for all your advice and opinions!

Whatever it is, it was not lower than the surrounding areas. Also, the gloss went over it and was not broken, so I don't think it's been sanded through.

Interesting comment about the blushing, I remember it was VERY hot and humid during the days I made the last coats of poly, but I am very sure I didn't see these areas before and after polishing (at least on the day I did it). I polished it and inspected it from all angles to judge if I like the outcome (I didn't). Then I decided to set it aside for a few days as I had some work to do.

I just noticed these areas when picking it up from the wall hanger today.

Also pretty good idea with the skin oils, but I'm pretty sure that's not it, as I'm usually wearing gloves when working on the guitar, even when sanding, because I don't want to have skin contact with the sanding dust (but I never wear respirators, talk about being stupid...).

So what I did today is to rough up the gloss surface and apply another coat of poly. Currently, it looks good, but I can only say for sure if it's dry.

I remember seeing a weird thing on my last build, too - don't know if it's the same - where I would see the different coats of poly after the final sanding. Like if you cut a tree and see the rings. But to a much smaller extend, so I can't say if it's the same. I "fixed" it by covering it with a few more layers of poly and then just lightly removing the dust before polishing.

I think this is going to be my last guitar build for a little while (unless we get locked up again...). I think I'll build an amp next