Q.
Once the hands are completed how do you blacken them?
A. The hands were blackened with a product
sold to age model railroad tracks (I don't know the name, its
worn off the bottle) This same product is common in the machine
tool trades to black oxide steel, and
gun
blueing would also work. I gave the hands a Very light rubbing
with 4/0 steel wool and wax to prevent rust and knock off the
deep black giving them an aged look.