Nitre blue will also give a jet black color but the target temp for that is 830 degrees. Talk about it being tough to get them that hot. I normally can get my salts up to 725-750 on a gas stove with an aluminum foil heat shield to retain the heat in more. And i get decent color for trigger guards and triggers at those temps.

I have looked into furnice pots a few times, but they are a lot of money.

Last edited by B. Dudley; 05/04/17 08:45 PM.
B.Dudley