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			Does anyone know how rubber tracks are molded? Are they made on a circular mold? I am wanting to build a mini excavator style design with more of  a tractor tread than a straight bar lug. Anyone with previous experience casting rubber please chime in.
		 
		
		
		
		
		
		
		
		
	
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			#2  
			
			
			
			
			
		 
		
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			They would be circular .  You may want to add some cable or strong fishing line in the mold to prevent the tracks from stretching.
		 
		
		
		
		
		
		
		
		
	
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