I am trying to varnish the tiller of my boat with a marine PU varnish (International Compass - Datasheet).
I have hung the tiller from the ceiling (in a spare room at room temperature) using a screw in an existing hole. I have applied a couple of coats with my brush, but I always seem to get dry spots and some runs. If I use more varnish, I get less dry spots and more runs and vice versa.
Between coat I have been using a utility knife blade to scrape away high spots and when I am satisfied I have given the whole tiller a light sanding with wet sanding paper (400 grit).
I am quite inexperienced in varnishing, so I appreciate any tips and tricks.
I am considering if I need to use thinner to make it more liquid (it always seems to be already gelling when I am done applying it to the whole tiller, so I don't brush it over after I am done).
I am now at the point where I consider just living with the defects unless I get some hint about how to put a "perfect" coat on. In that case I would let it cure for a week or two, take out the high spots and then apply a final coat.
I'd appreciate any help finishing off the project!