Best Way To Cut Sheet Metal Duct

Keep in mind that the cut edges of sheet metal are very sharp.

Best way to cut sheet metal duct. Https amzn to 2ndf97w the best tin aviation snips. First if you want to cut a duct near the middle and use both ends mark and cut the duct before snapping it together. An angle grinder fitted with an abrasive metal cutting disc works well to cut all kinds of metal including bolts angle iron rebar and even sheet metal. Using a chisel and hammer is the most basic form of cutting sheet metal.

Place the sheet metal on top of the workbench and lay out your pattern using a tape measure pencil and straightedge. Or use a unit if you have one. They don t cut curves well. The illustrations are for a small bracket but i have cut 3 foot long pieces using this method.

There are two ways to cut round ducts. Instead we recommend using a diamond blade that s rated to cut ferrous metal. Use compound snips with offset handles for more leverage and thinner cutting blades to cut thick seams straight sections and. Https amzn to 2kstzae sheet metal hammer.

There are many other tools and methods used to cut sheet metal ducts including hole cutters roto zips hole saws and even jigsaws. Cut sheet metal ducts with tin snips but match the type to the cut. Straight cutting compound snips work best for cutting thick or doubled up sheet metal. If you use metal shears to cut thin sheet metal such as duct metal it curls and can be difficult to flaten properly.

My question is that i was watching one of your videos on cutting the sheet metal and you suggested punching a hold with a screwdriver. If your project requires curved cuts make an easy economical and adjustable. If you ve hit it hard enough the chisel will cut the sheet metal if it s thin enough. Https amzn to 2mkd0sj large screw driver.

Tin snips with red colored handles can also cut straight lines and tighter curves to the left. Simply line up your chisel along the line you are going to cut and strike the back of it with a hammer.