How To Cut A Round Hole In Sheet Metal

Depending on the tools you have you ll now need to punch or drill a hole where the indentation has been made to produce an accurate hole in your sheet metal. Create a paper pattern of the size and shape of hole you wish to cut. At first locate the center of the whole.

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How to cut a round hole in sheet metal.

Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design. Now it s time to use that center punch. Advance the drill through the thin sheet metal it may be difficult to get the drill to start cutting but a gentle force should be used until the cloth has been pierced taking care not to distort the sheet metal the drill will then advance normally through the metal but the resulting hole will be both round and assuming drill geometry is not miles out the size will be spot on. Use your center punch to strike at the center of the hole.

You ll need a drill sheet metal snips a start collar. This will create dimples in the sheet. Punch a hole through the metal using a cold chisel and mallet or drill through with a heavy duty drill. In this video we show you the best and safest way to cut a round hole into a can or rectangular duct.

Tap your hammer to leave an indentation on the sheet metal. Next use a compass to outline the edge of the hole. Put your ink to the use and mark the hole center. Measure from the edges of the sheet metal to the point at which you.

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