To start off, I know next to nothing about finishing. I just recently got my shopbot and am making my first V-carved sign. It's a fairly simple display plaque for one of my Dad's antique tractors that won't see much, if any, serious outside elements.
I decided to just use a decent exterior latex paint for the finish. One color for the base and one for the lettering. There was no time to get a mask shipped here and play with that for this sign (short notice) so me and my wife are brushing in the letter paint by hand. This, by the way, is the last time I will do it this way. A mask and spraying has to be better....
Now to my question. Is there a suitable clear finish that I could spray/brush/roll over the entire sign to give it an added level of protection and that won't react with the latex paint or yellow? I ask, because we are not getting as good of paint coverage in the letters as the base and the extra protection there would be helpful I think. Any input would be appreciated. Thanks.