If you ve got a lot of straight cutting to do buy tin snips like the one shown in photo 4.
Cutting sheet metal straight line.
It cuts metal almost as easily as a scissors cuts paper.
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.
If you need a straight cut clamp a straight edge to the sheet to act as a guide for the jigsaw footplate.
Even so your cut will probably be a little ragged.
To cut straight lines use an electric saw.
An well known trick when cutting with your plasma cutter is to clamp a metal straight edge to the metal so the arc is directly over your cut line.
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A quality jigsaw and the correct metal cutting blade will make short work of sheet metal cuts.
Step 5 optional if your project requires cutting a hole in the center of sheet metal draw it on the metal as you would any other cut line.
This way you can simply press the edge of the torch cup against the straight edge and slowly make a straight cut.
Clamp or hold a straightedge or square along the cutting marks and score a line with the tip of a sharp utility knife blade.
Even in properly cut metal the fracture zone will be angled and rough.
This same idea i decided to take to sheet metal when using the scissor shears.
Edge surfaces of cut sheet metal are not typically smooth and straight.
In sheet metal cutting the lower the clearance value the higher the edge s quality.
And you can use the same technique anytime you need a straight cut on aluminum or other light gauge sheet metal even steel.
Then grip the saw with both hands and push the blade through the metal to cut it.
Then create a pilot hole within the penciled circle.
As you cut one side of the sheet metal will ride up and over the.
