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.
How to cut aluminum sheet metal.
Place the fracture line over the edge of a table and bend the overhang slightly downwards.
Bench mounted tools such as shears or band saws cut aluminum sheet relatively slowly and with varying amounts of accuracy.
Probably the preferred method for cutting intricate or thick aluminum the water jet focus a very thin stream.
Punch presses use shaped tools to knock out geometry in sheet metal.
Industrial cutting water jet.
Larger presses can be loaded with.
Sheet aluminium can be cut without the need for a guillotine or tin snips which tend to deform the metal.
To cut the sheets of metal rathe.
This weakens the aluminium and creates a fracture line.
Then create a pilot hole within the penciled circle.