Cutting Expanded Sheet Metal

First if you want to cut a duct near the middle and use both ends mark and cut the duct before snapping it together. I would say you have to be kidding the shear is the the fastest cleanest and best way every other way is second if you go to a large sheetmetal shop that cuts stainless expanded metal that and a cnc plasma burn table for curves or old shapes is the way they mostly do it i like the shear because you can set it up where you trim the killer little sharp edges off or at least most of them. Brought to you by http www ultimatehandyman co uk.

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There are two ways to cut round ducts.

Cutting expanded sheet metal.

How to cut sheet steel using a jigsaw with a metal cutting blade. Metal is difficult for saws to cut and rubbing wax along the blade helps prolong its sharpness. The first step toward correctly cutting expanded metal is finding the right tools that will aid the process. In our test it cut through rebar like a hot knife through butter.

The following equipment is crucial. Straight cutting compound snips work best for cutting thick or doubled up sheet metal. You can cut mild steel up to about 3 8 in. It may not be an obvious choice but fitted with the right blade a circular saw is a great metal cutting tool.

Hot metal chips will fly everywhere. Then choose a grinder drill saw or laser tool. Cut metal with your circular saw. Expanded metal cutting tools.

Apply a thin layer of paraffin or saw wax to the blade just enough to cover the surface before making any cuts in the metal. They don t cut curves well. Consider the size and nature of the expanded metal you need to cut. Wax your saw blade before cutting sheet metal.

Thick using a ferrous metal cutting blade.

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