A question
			 
			 
			
		
		
		
			
			Jeff, would this method of straightening work on a very old Katana without causing damage to the outer steel?  Most swords I have had to straighten I've just used a large copper mallet and some pine timber blocks.  
I ask as a friend wants to straighten one and I am reluctant to use the blocks and hammer method on harder steel than what I am used to, maybe the press would be a better option, maybe there is another method you can suggest?  
 
thanks 
 
Gav
		 
		
		
		
		
		
		
		
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