how to cut aluminum
Set the piece of aluminum on a table or over sawhorses, and position it so the cutting area has open space underneath it. Clamp the aluminum down. Mark the start and stopping point of your cut with a grease pencil, or some similar implement that marks on sheet metal. With the aid of a ruler or yardstick, draw a straight line between the two marks. Apply a handheld rotary tool fitted with a fiberglass reinforced cut-off wheel accessory to the cutting line.