If you re bending 0 020 thick material use a 0 020 radius.
													
																	Bending for sheet metal. 
									
	
		
	
																	The force must exceed the material s yield strength to achieve a plastic deformation. 
																	The inside bend radius should be equal to the thickness of the material that you re forming. 
																	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. 
																	This neutral line. 
															
													
									
	
		
	
																	Bending is a manufacturing process that produces a v shape u shape or channel shape along a straight axis in ductile materials most commonly sheet metal. 
																	Bending is one of the most common sheet metal fabrication operations. 
																	This is done through the application of force on a workpiece. 
																	Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. 
															
													
									
	
		
	
																	Bending sheet metal by hand is a manageable task if the piece of sheet metal is small and thin enough to handle.