, for one, makes flattening additives to take the shine off their Brightside one part polyurethane
. You mix it in with the paint to whatever finish looks good to you. For painting plywood, start with a plywood other than a fir veneer. You can buy prefinished plywood designed for painting that makes getting a good smooth finish painless but it sounds like you are past that possibility. The marine
paint manufacturers make high build sandable primers that really cut down on the prep time to get a good finish.
Pre-Kote Boat Paint Undercoat | Interlux
They fill the grain of the wood and sand smooth with very little effort. Have tried the oil
based primers from HD and Lowe's with crappy success. They are very prone to brush strokes and just load up the sandpaper. Forget latex anything, the stuff won't sand.
I discovered a trick that probably many of you have known about for years to get rid of brush strokes when applying paint. Just painted the underside of my hatches and was getting bad brush strokes with Interlux
Brightsides. After applying the paint, dipped the brush in thinner and rebrushed the paint with frequent dipping in the thinner. Voila, the brush strokes disappeared.
Really like a painted interior
with flat surfaces painted and highlighted by varnished wood trim. It's called a Herreshoff finish after the Wizard of Bristol who apparently spec'd it on the boats built or refinished in his yard. Makes for a bright airy interior appearance that highlights the wood joinery on the trim.