Nice drawing, John [JBCase]. It funny everybody ask about the tubes. But I believed nobody have ask  or wonder how the rivets are installed? Machine or Hand Hammer, and which tool you use? But then again are screwback posts/ conchos [chicago screw] use?
Brain, Thank for the reply.
Some might want to buy magnify glasses!!
				
			Brain, Thank for the reply.
Some might want to buy magnify glasses!!
			
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