How To Cut A Round Hole In Sheet Metal

Next use a compass to outline the edge of the hole.

How to cut a round hole in sheet metal.

Tap your hammer to leave an indentation on the sheet metal. This will create dimples in the sheet. You ll need a drill sheet metal snips a start collar. Measure from the edges of the sheet metal to the point at which you.

In this video we show you the best and safest way to cut a round hole into a can or rectangular duct. Use your center punch to strike at the center of the hole. Put your ink to the use and mark the hole center. 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.

Create a paper pattern of the size and shape of hole you wish to cut. Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design. Punch a hole through the metal using a cold chisel and mallet or drill through with a heavy duty drill. Now it s time to use that center punch.