Industrial cutting water jet.
How to cut aluminum sheet metal.
An air powered sheet metal nibbler or a nibbler head attached to a power drill can cut through galvanized corrugated aluminum sheet as well as flat sheet up to 16 gauge.
Then create a pilot hole within the penciled circle.
Place the fracture line over the edge of a table and bend the overhang slightly downwards.
Modern lasers will be effective.
Probably the preferred method for cutting intricate or thick aluminum the water jet focus a very thin stream.
To cut the sheets of metal rathe.
With the aid of a straight edge and a sharp knife score both sides of the aluminium sheet.
Step 5 optional if your project requires cutting a hole in the center of sheet metal draw it on the metal as you would any other cut line.
This weakens the aluminium and creates a fracture line.
Larger presses can be loaded with.