There are two ways to cut round ducts.
Best way to cut sheet metal siding.
Probably it s also the cheapest way for cutting corrugated tin roofing.
A tool like a nibbler is fast and easy to maneuver around to cut circles corners and angles in sheet metal work with out jamming like electric shears or tin snips would.
It is necessary when you need to cut out the middle of a roofing sheet.
Snips are ideal for cutting any type of corrugated roofing especially for cutting softer metal like tin sheets.
They don t cut curves well.
Make a rough estimate cut out the siding enough so that you can make the rough opening.
Using a dewalt 20 volt drill and cutters made by malco real good stuff.
In our test it cut through rebar like a hot knife through butter.
You can cut mild steel up to about 3 8 in.
A handheld cutting tool fitted with a metal cut off wheel will easily cut through sheet.
How to cut angle cut for the roof pitch.
The metal is for siding a trailer house.
Straight cutting compound snips work best for cutting thick or doubled up sheet metal.
The easiest way to do this is with an electric drill and a 1 2 in 1 3 cm metal cutting drill bit.
Then when you know the exact location the window will be and how big the trim will be then cut the siding back again but this time it s a finish cut.
It may not be an obvious choice but fitted with the right blade a circular saw is a great metal cutting tool.
Make the hole in the center of the part you wish to cut then trim toward the guideline you drew.
Hot metal chips will fly everywhere.
An electric nibbler is what a professional roofer would use it punches its way through the metal in a fast and tidy way to leave a clean cut.
Thick using a ferrous metal cutting blade.
A nibbler is the best way to cut metal roofing a nibbler unlike electric shares a nibbler can be moved more easily to cut around corners quickly and easily without jamming.
The best tool to cut sheet metal is an electric nibbler tool it cuts corrugated iron sheet metal and even metal car panels easily.
You won t need a pilot hole if you re cutting end to end across a sheet.
Cut metal with your circular saw.
Tin roofs are lightweight and soft by nature this is why cutting them manually with snips is a good option.
