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.
Aluminum sheet cut.
With the aid of a straight edge and a sharp knife score both sides of the aluminium sheet.
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If the tooth pitch is too fine there s a high risk that the aluminum chips with clog the blade.
Then place your tin snips into the opening.
Sheet aluminium can be cut without the need for a guillotine or tin snips which tend to deform the metal.
Cut circles in aluminum using curve cutting snips.
Aluminum sheet is any aluminum sheet metal thicker than foil but thinner than plate sheet is under 249 thick while plate metal is 250 and above many do it yourself projects such as metal fabrication siding or roofing use aluminum sheet because it is a relatively soft metal and thinner gauges can easily be cut.
Place the fracture line over the edge of a table and bend the overhang slightly downwards.
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Afterwards create a starter hole within the circle by hammering the back of a straight blade screwdriver into the metal.
The ideal tpi for cutting thick aluminum plate is 10 14.
This weakens the aluminium and creates a fracture line.
Draw a circle in permanent marker on the aluminum piece.
Flip the sheet over and repeat.