I am going to make some signs where I will rout in names and symbols. The routed channels should be about 1/2" wide and about 1/4" deep. I would like to just be able to pour some paint into these channels, and let them sit in the sun for a week and dry. Any suggestions on a long lasting paint that will hold its color for a good while, too. The signs will be made out of redwood, and will be out in the sun, rain, snow 24/7. Or a better suggestion for a type of wood?
Steve