Carding is where you use a tooth brush or a piece of stiff cloth, such as a piece of old denim to rub the orange scale off the metal before applying your next coat of browning solution.
Glad you're using plum brown and not Laurel Mountain Forge. The latter is crap, and produces lousy results. I've used both types and Plum Brown is far and away the better product.
I used a dowel for the muzzle, same as others here, however I added layers of masking tape until I could shove the taped part of the stick into the muzzle and it would not fall out. For the flash hole I just inserted a toothpick.
If you have soldered on tennons on the barrel, watch out that you don't heat the metal too much that it melts the solder. That is why I used LMF on my smoothbore because its applied cold.
I ever do another barrel, I think I'm gonna use my heat gun to heat the metal instead of a torch when using plum brown. My heat gun gets up to 400 degrees. Plenty hot enough to sizzle plum brown on metal, without the danger of open flame such as when using a torch.
I know one thing, I'll never use LMF solution again. That stuff is garbage.
Last edited by Blue Bird; 01-31-2017 at 07:24 PM.