I cheated....
			 
			 
			
		
		
		
			
			Hi Phil 
 
I was not sure either.....but I ran a corner of the hinge under the bench grinder..... the sparks convinced me it was steel.... so I kept grinding a bevel on both faces...... wanted to make sure we had good penetration..... and we did .....they got red hot side to side. 
 
I just did not know we could do it.... 
 
Bob
		 
		
		
		
		
		
		
			
				__________________ 
				Bob Carriere....B.T.B 
C15a Cab 11 
Hammond, Ontario 
Canada
			 
		
		
		
		
		
	
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