Cut Sheet Metal Without Curling

If you use metal shears to cut thin sheet metal such as duct metal it curls and can be difficult to flaten properly.

Cut sheet metal without curling.

If you want the speed of a power tool you can get an electric metal shear and get straight cuts without curling your metal. You will sacrifice about a quarter inch strip of metal with each cut but that s less waste than i got with hand tools. To cut straight lines use an electric saw. Start by taping both sides of the sheet metal directly over the line you want to cut and clamp the metal to a work station so it doesn t move.

It works best only if there is a small project since it will require more effort on your end which is why it may not be the best for beginners. When set to a low amperage a plasma torch won t warp the metal and can yield quick clean cuts that help you get the job done quickly. Another tool that will be an effective choice for cutting sheet metal is a hacksaw. You can cut the sheet metal without too much distortion and noise when you use a nibbler.

They look like scissors and work fine with sheet metals like brass aluminum tin steel etc. Plus a plasma torch can be used for thick metal too so they are really handy. There are some cuts that you can do with decent tin snips. Tin snips or aviation snips are one of the most widely used tools to cut sheet metals.

The illustrations are for a small bracket but i have cut 3 foot long pieces using this method. These photo steps show that it can be done using a utility knife.