I am doing the finish by hand. So I will be able to finish the highest three frets before clamping.

I am not concerned about the parts no one can see, although I don't think you are alone in that. For me it's hard enough to get the parts people can see up to acceptable.

I don't have a good place to spray, even with rattle cans. And the curing will take place in my garage/workshop/office.

Also I found a product that produces a reliable, hard result and is non-toxic. It is as close to idiot proof as anything I have found, but it doesn't come in a rattle can.

I have done a bunch of tests with rattle cans, and one full guitar. Conditions are really variable here. Lots of heat and humidity. Sunshine punctuated by torrential rains. That may combine with my lack of skill to produce an inability to get a good finish out of a rattle can. I can't seem to get them to finish hard, and I tend to have a bunch of other problems as well. Drips are clearly my fault. But I don't know how else to explain that one day I get a smooth finish, and the next day, doing the same thing, it comes out pebelly. And sometimes they don't seem to cure completely.

I finally found a color that I could spray on and get decent solid color results. But I have yet to get a good clear coat out of a rattle can. So it's back to the hand applied clear coat that has worked at least once before ;-)

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