Originally Posted by
John TenEyck
The fly in the ointment of your list is cooler temps and less than ideal conditions. The only finish tolerant of almost any condition is shellac, which sprays great but is not all that protective. Lacquer can be used at fairly low temps., I think, but I know little about it because it's too much of a risk for my shop. WB's have a minimum temperature requirement and if you don't adhere to them you risk failure of the bond or curing of the finish, or both. 55F or so is the limit for most of them.
I use General Finishes products most of the time because they have a broad range and I never have problems with them. Of their products, Enduro Clear Poly is my overall favorite for ease of spraying, good looks, and durability. Lenmar's Duralaq-WB, available at Benjamin Moore, is my favorite low cost product. It sprays beautifully, dries and hardens fast, and is perfect for low stress applications like non kitchen/bath cabinets.
My experience with most WB products is they are often dead clear. TC's EM-9300 has a decided amber tone, but that's about the only one I'm familiar with. GF's EnduroVar is said to have an amber tint, and is supposed to age like a traditional OB varnish, but it's still pretty clear to me. That's not a bad thing in my mind, it's just the nature of WB products, and it's often a very good thing when you want a really clear finish. But when I want a more traditional oil based varnish look I start by spraying a coat of Sealcoat shellac. It does two beneficial things. It tints the wood with a light amber tone and it prevents the grain from raising when you spray the WB finish afterwards. If I want a more aged varnish look I either spray a coat of dye directly on the wood first, or I add dye to the Sealcoat shellac. Transtint dye is soluble in both water and alcohol (shellac) and offers a lot of flexibility for use as a dye or tinting shellac or even your WB topcoat.
John