How To Cut Sheet Metal Ductwork

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

How to cut sheet metal ductwork. Use compound snips with offset handles for more leverage and thinner. Https amzn to 2mkd0sj large screw driver. Fasten down the ductwork before cutting it be sure to fasten down the piece of metal ductwork so it won t move when you cut it to the length you need. You ll need a drill sheet metal snips a start collar.

Long straight cuts are easier to make with large tin snips. Make long strokes for long straight cuts. Duct work 6 x 6 x 36 long with end cap hvac duct. If it s small enough you can use a vice but if not you still need to hold it down tightly so it won t move while you cut it.

Https amzn to 2kstzae sheet metal hammer. Mark the cut line or area on sheet metal with a felt tip marker. If your project requires curved cuts make an easy economical and adjustable. Then you just sight on the far mark while you make the cut.

Place the sheet metal on top of the workbench and lay out your pattern using a tape measure pencil and straightedge. One end will have an end cap and the other end will be raw notched at 1 2 for easy field modification. Open the cutters as wide as you can at the start of each stroke and make long smooth strokes. Cut sheet metal ducts with tin snips but match the type to the cut.

Rectangular sheet metal duct. Make two marks for cutting when replacing ductwork when cutting pipe bob likes to mark the size he needs on each side of the open seam with a marker. Punch a starter hole in the metal with the blade of a. Lift the cutoff strip and roll it to the side to prevent it from binding on the tin snips handle.