cutting roof steel already installed

[KANIMALHOUSE]

We have a barn with a steel roof that we are now attempting to put up gutters on. The overhang on this side of the barn is about 6″ and so are the gutters. We need to cut it back about 4″ but its 48′ long. Doing it with hand shears will be long and painful. The ribs are what makes its impossible to use nippers. Is there a rotary tool or something out there that won’t tear up the roof or bounce back and kill me? The manufacturer of the steel said DO NOT use a circular saw.

[tomh]

Abrasive blades and saws leave raw edges that rust and can heat the edge of the roof and cause it to rust as well. An inexpensive way to speed up the cutting job is power cutting shears. You can buy or perhaps rent power shears for cutting metal, or get a $70 adapter for your 3/8 drill. Look up Malco TSHD metal shear on a search engine. Note the drill adapter is only good for 18-20 gauge steel. If you need to cut up to 14 gauge steel, you need a dedicated shear like this:
http://www.toolfetch.com/Category/Metal_Fabrication/Metal_Shears/KD-440.htm

If you can’t rent it, you can probably resell it.

[Author]

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