Etching?
			 
			 
			
		
		
		
			
			I am a new collector, can you describe the solution and procedure for etching a sword?  I think I read that Keris are cleaned and etched using an arsenic/citric acid solution?  I also realize that doing anything other than conservation to a good sword is usually not advised.  If this has been covered before, maybe someone can point me to it.   
 
Thanks, 
 
John
		 
		
		
		
		
		
		
		
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