Etching with iron(III)chloride hexahydrate
			 
			 
			
		
		
		
			
			Hello, I wonder If I may ask for an advice: 
How concentrated should the solution be ? How long time should the blade be plunged ? When removed from the bath, should the blade be slightly (by cloth) repolished again ? Any potential risks ? 
Thanks 
Martin
		 
		
		
		
		
		
		
		
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