2 x research source.
How to cut aluminum sheet metal straight.
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.
Bench mounted tools such as shears or band saws cut aluminum sheet relatively slowly and with varying amounts of accuracy.
Place the sheet metal on top of the workbench and lay out your pattern using a tape measure pencil and straightedge.
Put on a pair of work gloves before you wax the saw to protect your hands.
Sheet aluminium can be cut without the need for a guillotine or tin snips which tend to deform the 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.
Using a straight edge clamped to the edge of the bench is also a good tip to cut thin metal precisely.
If your project requires curved cuts make an easy economical and adjustable.
Choose a saw with a tooth number of at least 24tip teeth per inch to ensure even cuts in the metal.
This weakens the aluminium and creates a fracture line.
Cutting straight lines with an electric saw.