Many years ago I helped a painter stain a lot of molding. He had a spray booth and did lots of spraying but for some reason opted for the following...
He had 2 new cotton wash mitts, wore rubber gloves under them, poured his stain into a clean 5 gallon bucket. It was my job to walk the molding away from him while he held the mitts, full of stain over the molding. As corny as it sounds, it worked great for the mass amount of molding he had to do. Of course the molding has to wiped after the stain sits a while.
He had 2 new cotton wash mitts, wore rubber gloves under them, poured his stain into a clean 5 gallon bucket. It was my job to walk the molding away from him while he held the mitts, full of stain over the molding. As corny as it sounds, it worked great for the mass amount of molding he had to do. Of course the molding has to wiped after the stain sits a while.