Thanks both 
I think the realgar works as it makes the blade go black. My question is it normal for all the black to simply wash off after say 5 applications of warangan and revert to s silver state? 
Should I be rinsing the blade after 2 or 3 applications by way of a brush and letting each get to a sticky state? Or should I keep applying coat after coat? 
I dont have access to lab arsenic or it would be my first choice. 
What about ferric or Nital? Can these be used? If not why not? Same principle I would have thought. Not sure if arsenic is an essential ingredient.
		 
		
		
		
		
		
		
		
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