think I have
we have a new "special red" formula, tried it out the first time today to match a sample (supposedly this cheap Chinese steel was just left outside up round aspen to get this red color)
its an acetic acid prewash (soak) with an extra strong hydrogen peroxide wash (2 parts H20 1 part H2O2).
That little giant nearly broke my thumb off a bad bounce on an 1/8th"x16"x12', the work hardening on something that wide and long is a @#@$%#