For thin sheets of metal you can use tin snips to cut through it.
Ways to cut aluminum sheet.
To cut the sheets of metal rathe.
Next secure your aluminum pieces with clamps and slowly feed the aluminum through the blade using steady even pressure.
To cut aluminum use a wood cutting saw with carbide tipped blades.
And you can use the same technique anytime you need a straight cut on aluminum or other light gauge sheet metal even steel.
Jigsaws and metal cutting band saws are more work but can make most cuts in light to medium sheet metal.
Then bend the sheet back and forth a few times to snap it.
After a few wiggles the sheet will fracture along the cut line leaving a clean break as shown in the above photos.
To cut straight lines use an electric saw.
Start by taping both sides of the sheet metal directly over the line you want to cut and clamp the metal to a work station so it doesn t move.
Then grip the saw with both hands and push the blade through the metal to cut it.
A handheld cutting tool fitted with a metal cut off wheel will easily cut through sheet.
With care and patience full size sheets of aluminium can be cut using this method.
Using a softer piece of material such as wood as a backer will allow the chisel to push through the metal and prevent wear on the chisel s tip.
Cutting aluminum sheet metal with a hammer and chisel is relatively straight forward line up the edge of the chisel along the line you wish to cut and strike the chisel with a hammer.
Create a long fracture line then progressively bend the sheet from one end to to the other.