After an introduction to air bending the principles of models which are based on the assumption that the sheet wraps around the punch are described. In other words if you re bending 1 8 sheet use a tool with a 1 8 radius to form the inside of the bend. Curvature prediction in air bending of metal sheet article pdf available in journal of materials processing technology 100 s 1 3 257 261 april 2000 with 380 reads how we measure reads. 
				
			
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