Gamvar is a varnish that can be used when your paint is "touch dry." Gamblin defines touch dry as when your fingernail still leaves a dent in the paint. I have been using Gamvar for several months with success. Be sure to read the instructions. You are told to put it on thin and scrub it in a bit (not too much). It dries in minutes.
Comments
Six months to varnish.
Touch dry to retouch varnish.
Touch dry to oil out procedure.
Touch dry is normally about two weeks depending on temperature and humidity.
Krylon has a final varnish that can be used at touch dry, but I have not not used it.
Denis