Varnishing complex shapes, each surface individually, or all in one?
I’m a hobbyist who have been struggling to varnish a complex object, it is a musical instrument. I had figured I had to varnish it all in one go, so there are no visible transitions. It needs varnish on the upside and the underside. I had figured out an elaborate way to do that, but the result was not so great. There were sags and unevennesses. I reckon it doesn’t matter, as it’s only the first coat, but I’d like some advice on how to go on for the next coat.
I had made some test pieces, and they came out great, but they were all horizontal surfaces.
There are semi-sharp edges between different surfaces, so it may be that I should varnish one surface at a time instead? Then I can have them all horizontal. It will take longer, of course, but if it can be done with great results, maybe that’s the way. What do you think?
See the picture for the object.
EDIT: The type of varnish is Polyurethane, clear gloss.