Best Way To Cut Round Holes In Sheet Metal

In this video we show you the best and safest way to cut a round hole into a can or rectangular duct.

Best way to cut round holes in sheet metal. How to cut holes in corrugated steel. Next use a compass to outline the edge of the hole. Punch a hole through the metal using a cold chisel and mallet or drill through with a heavy duty drill. Put your ink to the use and mark the hole center.

Create a paper pattern of the size and shape of hole you wish to cut. Straight cutting compound snips work best for cutting thick or doubled up sheet metal. The beveltools beveling machines are ergonomic making it easy to get them to the metal. In response to a question about h.

Typically the hole is large and the sheet metal won t fit on my cnc milling machine so i m left flailing. There are two ways to cut round ducts. 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.

Now it s time to use that center punch. You can cut mild steel up to about 3 8 in. This will create dimples in the sheet. With this tool you stick an endmill in a die grinder put the grinder in the little fixture so it can pivot drill yourself a pilot hole for the pivot and away you go.

It may not be an obvious choice but fitted with the right blade a circular saw is a great metal cutting tool. When drilling or punching a hole in sheet metal you more or less cut out the entire hole at once. As a result rounding small openings from a diameter of 5 8 16 mm becomes child s play. Hot metal chips will fly everywhere.

Thick using a ferrous metal cutting blade. In our test it cut through rebar like a hot knife through butter. Cut metal with your circular saw. Use your center punch to strike at the center of the hole.

At first locate the center of the whole. First if you want to cut a duct near the middle and use both ends mark and cut the duct before snapping it together.