Set the piece of aluminum on a table or over sawhorses and position it so the cutting area has open space underneath it.
													
																	Cutting aluminum sheet clean. 
									
	
		
	
																	These photo steps show that it can be done using a utility knife. 
																	To cut the sheets of metal rathe. 
																	This weakens the aluminium and creates a fracture line. 
																	Clamp the aluminum down. 
															
													
									
	
		
	
																	The illustrations are for a small bracket but i have cut 3 foot. 
																	Place the fracture line over the edge of a table and bend the overhang slightly downwards. 
																	With the aid of a straight edge and a sharp knife score both sides of the aluminium sheet. 
																	This jet of water eats away at the metal and leaving a clean smooth edge. 
															
													
									
	
		
	
																	Probably the preferred method for cutting intricate or thick aluminum the water jet focus a very thin stream of water mixed with abrasives at extraordinary pressures and very high speed into the sheet metal. 
																	2 mark the start and stopping point of your cut.