Then create a pilot hole within the penciled circle.
Cutting sheet metal straight line.
Even in properly cut metal the fracture zone will be angled and rough.
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In sheet metal cutting the lower the clearance value the higher the edge s quality.
Edge surfaces of cut sheet metal are not typically smooth and straight.
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.
For thin sheets of metal you can use tin snips to cut through it.
As you cut one side of the sheet metal will ride up and over the.
It cuts metal almost as easily as a scissors cuts paper.
To cut straight lines use an electric saw.
And you can use the same technique anytime you need a straight cut on aluminum or other light gauge sheet metal even steel.
This same idea i decided to take to sheet metal when using the scissor shears.
Even so your cut will probably be a little ragged.
If you ve got a lot of straight cutting to do buy tin snips like the one shown in photo 4.
Clamp or hold a straightedge or square along the cutting marks and score a line with the tip of a sharp utility knife blade.
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.
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.
And the long blades make it easy to cut straight and leave a smooth edge.
Shaving is a secondary process that can be used to improve edges of cuts that have already been made.
