Carl, there's a lot of theory going on with flocking and why it's so effective and why it's blacker. My best guess would be the depth of the fibers in part and how they absorb light. I don't really like to airbrush the heads of mallards, goldeneye, buffleheads, etc. because I feel like it prevents that blackness unnecessarily. However for the other decoys I make as a matter of expectation I'll put some green airbrush on them, purple and blue on bufflehead. I definitely like the pretty and do that sort of thing routinely for others, but I'm making decoys to hunt, so I'm watching what is more effective. Flat black like what is on the bufflehead in the picture with the shotgun reflects light, it kind of makes it have a washed out look. The last picture shows that it can be just as black as the real thing and doesn't reflect light.
SJ, you end up doing various recipes for the paint colors, ( oil based enamels) What colors will make the base as close to accurate as you can. Black ducks are fairly easy to flock, If Caleb is going do his airbrush magic on it I'll flock them feather brown over gloss leather brown rustoleum. That allows Caleb to use the airbrush to do a little artistic feathering, then create a little depth with black amongst the feather groups. That's way, way unnecessary, but gives it a little life and that's always fun. However strictly from a hunting standpoint I would flock black ducks with dark brown flocking or feather brown flocking over gloss black rustoleum. Flock the head with a custom mix of gloss almond rustroleum with a little brown mixed in and use bisque tan flocking. Then I flock the cap of the head with the dark brown. I wouldn't paint a thing other than the bills. I even use black ducks out here in the snake river plain of Idaho instead of mallard hens because they just show up better.
I don't want to have to push a color too far with the airbrush. Getting color sections as close as I can in the flocking process helps. For instance when I flock the flank of a wood duck I make a color very close to that yellowish color I add a bit of brown and white to get it close the flank color and then flock it white, it will leave you with a color close.
Now some are probably a little curious about my always suggesting gloss oil based enamels like rustoleum. It seems kind of counterintuitive, but when we first started flocking there wasn't much information and nearly everything was bad information and on youtube nearly all of it is bad. Gloss helps in a few ways, one, it stays wet longer and helps you to get better coverage. two, when they add flateners to paint it weakens the paint. Gloss maters not at all with a flocked decoy, even the paint we use over flocking is gloss oil based enamel. Painting over flocking the surface still remains flat other than on the bill. There are airbrush techniques that allow you to achieve a satin finish on the bills even with gloss paint. However a glossy bill goes in the river and the gloss is usually not an issue anyway. You can't use gloss paint when painting standard plastic decoys, so you are going to have to put up with dull drab decoys like those plastics in my last post.
For the most part my flocking process has been discussed extensively on other forums, so it's really not a secret. Pretty simply is flocking dusted over a decoy painted with gloss oil based enamel with a kitchen sieve, shake it on before you shake it off and that's your first coat. Let that dry overnight and then flock specific colors for a second coats. For instance on a mallard drake, I flock it grey first, the whole body except the head. Then I flock that part of the body that should remain grey, from the front of the flank to the end of the femoral tract and all the back to the base of the back of the neck and to the ends of the tertials. After another day of drying I'll flock the chest and head feather brown over gloss leather brown. Then the next day I can finish the flocking by flocking the head black and the entire rump and tail black. We hand paint the white tail with flat white rustoleum as well as the neck ring. White is a different animal and it's just not white enough with the airbrush over flocking and needs painted over, this series of pictures of a wood duck demonstrates that fact.
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