I re-build and re-assemble east german rifles ( ak variants) I found a formula that cheap and real easy no metal boiling tanks or caustic chemicals all you need is a deep Tupperware plastic bowl and a narrow black window flower pot 36' as sold by home depot in the garden department. the window planter may have holes not cut all the way so some tub chaulk seal them up.
I use Laurel Mountain forge "Barrel brown & degreaser" I know barrel brown! but when used with distilled water it turns BLACK Laurel Mountain Forge
follow the instructions
Laurel Mountain Forge: Barrel Brown & Degreaser Instructions
prep is easy too nothing special is required, I clean the metal with fine sandpaper and then fine steel wool then a acetone bath. dry then ready the metal small parts are coated with a cotton rag and cotton swabs ( ear) if in a humid area let dry 3-6 hours I prefer longer (even here in florida) once the metal displays a rust coating I soak in boiling distilled water
after the first coat with a old toothbrush I wipe of the excess material and hit with a warm wet rag ( you will get black on your hands) this is called carding
I let this sit a few hours, then repeat the process 3-4 times
I use Laurel Mountain forge "Barrel brown & degreaser" I know barrel brown! but when used with distilled water it turns BLACK Laurel Mountain Forge
follow the instructions
Laurel Mountain Forge: Barrel Brown & Degreaser Instructions
prep is easy too nothing special is required, I clean the metal with fine sandpaper and then fine steel wool then a acetone bath. dry then ready the metal small parts are coated with a cotton rag and cotton swabs ( ear) if in a humid area let dry 3-6 hours I prefer longer (even here in florida) once the metal displays a rust coating I soak in boiling distilled water
after the first coat with a old toothbrush I wipe of the excess material and hit with a warm wet rag ( you will get black on your hands) this is called carding
I let this sit a few hours, then repeat the process 3-4 times