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 thin aluminium sheet.
Clamp or hold a straightedge or square along the cutting marks and score a line with the tip of a sharp utility knife blade.
Clamp the aluminum down.
A cnc router can cut aluminum but it isn t the ideal tool for hogging out big aerospace parts like wing spars.
Then bend the sheet back and forth a few times to snap it.
Sheet aluminium can be cut without the need for a guillotine or tin snips which tend to deform the metal.
And you can use the same technique anytime you need a straight cut on aluminum or other light gauge sheet metal even steel.
Note that i don t mean to literally slow down your feeds and speeds but your overall material removal rates will be less than what can be achieved with a purpose built cnc mill.
How to cut thin aluminum.
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Align the snips with the line you want to cut with the upper blade of the tin snips touching the sheet metal.
Tin snips are primarily used for cutting thin sheet metal like tin aluminum brass and thin gauge stainless steel.
How to cut fold sheet aluminium.
To cut the sheets of metal rathe.
Place the metal on a hard surface to score it and on long pieces do the bending with the score place along a sharp edge of a bench and if necessary clamp the fixed piece with a long piece of flat wood to prevent buckling the metal while bending it back and forth.
Mark the start and stopping point of your cut with a grease pencil or some similar implement that marks on sheet metal.
The price you ll pay for success is slowing things down.
If possible choose a saw blade that creates narrow kerfs the notch or slot made by the saw.
Use a wood cutting saw with carbide tipped blades to cut most aluminum.
Set the piece of aluminum on a table or over sawhorses and position it so the cutting area has open space underneath it.
