Best Way To Cut Circle In Sheet Metal

Before you start cutting i would recommend taping couple of your major fingers.

Best way to cut circle in sheet metal. Tin snips or aviation snips are one of the most widely used tools to cut sheet metals. When drilling or punching a hole in sheet metal you more or less cut out the entire hole at once. They look like scissors and work fine with sheet metals like brass aluminum tin steel etc. First if you want to cut a duct near the middle and use both ends mark and cut the duct before snapping it together.

Straight cutting compound snips work best for cutting thick or doubled up sheet metal. Such as straight cut snips left cut the right cut etc. They don t cut curves well. There are some cuts that you can do with decent tin snips.

Use your nondominant hand to hold the side of the metal. This will not only brace it to keep it in place but you ll be able to pull it up as you cut. Hold the side of the metal sheet and put your snips around the edge. You can use barkeepers powdered cleaner bon ami is similar or if you want to go all natural baking soda lemon juice and dish liquid work pretty good.

Hold the snips loose in your hand and place the two blades around the edge that you d like to cut. It s meant for creating lightening holes of the type seen when building aircraft or maybe just toolboxes and furniture that are built like wwii fighter planes. There are two ways to cut round ducts. Be that as it may here is a neat idea from flyboy accessories for cutting larger holes in sheet metal.

When cutting out a circle one or sometimes two cutting tools are rotated about a center point to. Draw your shapes you want to cut onto copper with pencil or a sharpie marker.