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			#39  
			
			
			
			
			
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			So it will etch where the part is at the surface... hmmm. Looks like the barn cleaning phosphoric acid I used to strip a couple fenders. I could feel the line with a finger nail. You can see the etch lines in the fender, where I only had the bottom submerged to dissolve the rust in the pits.   
				__________________ Mitch 1970 Chevelle SS 1966 Chevelle SS 1967 Camaro ss/rs 1938 Business coupe, street rod 2000 FXSTS, original owner, 13k miles | 
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