I finish many of my projects with spray lacquer and buy the stuff by the gallon. It's no fun trying to fill a spray-gun pot from a full can, so I made a dipper from an old convenience-store drink cup.

I cut the cup so it resembles a ladle as shown below. If you cut it so it leaves you about 13 to 12 cup of capacity, that's plenty. Now, I use the ladle to scoop lacquer out of the can and pour it through a strainer into my spray-gun pot. And, if I want to thin the lacquer, say 50/50, I add an equal amount of thinner, again using the ladle, this time as a measuring cup.
—Jerry Vance, Lubbock, Texas