While some holes in sheet metal.
Cut 6 hole in sheet metal.
Metal cutting hole saws are typically available in 3 4 inch to 6 inches in size and feature a sawtooth tipped cylinder with a pilot drill bit at its center.
Use your center punch to strike at the center of the hole.
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Tap your hammer to leave an indentation on the sheet metal.
Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design.
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For cutting out holes in sheet metal it s going to be necessary that you begin with a starter hole this can be formed by using the hammer and chisel method to punch through the metal.
At first locate the center of the whole.
Put your ink to the use and mark the hole center.
Open the snips all the way at the beginning of a cut and seat the sheet metal as deep as possible into the opening this provides you with maximum leverage.
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Now it s time to use that center punch.
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Then create a pilot hole within the penciled circle using a power drill.
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Next use a compass to outline the edge of the hole.
They give you increased productivity on the job site as well as better hole quality and are backed by a limited lifetime tooth break warranty.
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.