Read that a dry erase marker works as a substitute for blackening.  It did the job much more easily and comes off neatly.  The barrel is marking fully on the stock now, so, on to the tang.  I have some decisions to make with the length.  If cut for a 2” length, the current precarved design won’t nearly provide enough space for a beaver tail carve that will look right.  So, 1 7/16” precarved design, or, extend it out to 2” and simplify the carving surrounding the tang.