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TOPIC: Cutting Metal Panels

cutting metal roofing.

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I'm installing a classic rib style metal roofing panel on my house and have much cutting to do. What is the best tool to use? I bought a Milwauke electric shear but it doesn't cut through the ribs very well. Someone suggested a thin metal cutting wheel on my 4 1/2" grinder but cautioned about sparks on the paint. I need some suggestions on what tool is best suited for this job!
Guest User

8/8/2004
You do not want to cut in a way which creates sparks that will embed in the paint and later rust. Ideally, these panels are cut with a shearing action such as hand snips, guillotine, or electric shears. Anyone who installs much of this type of panels ends up getting a guillotine.
Todd Miller
Isaiah Industries, Inc.

8/9/2004
Todd, I'm only doing my own home and I have 4 valleys I have to deal with. I've tried aviator snips but their a lot of work. Electric shears don't go thru the ribs. One friend recommended using a lefthand and a righthand snip together. I have a catalog that sells a hand operated nibbler. What do you think?
Guest User

8/10/2004
I would reccommend a pair of Left Offset Aviation Snips. Midwest makes some available at Sears. I have been roofing for a long while now, and do many standing seam panels with that single pair. They will cut smoother, easier, and keeps the metal further from your hands. I assume you will be using gloves. As for a grinder. Sparks may burn the finish coat depending on the style chosen. The shavings not being completely removed from the panel, will probably cause surface rust very quickly, eventually burning into the finish. Avoiding metal to metal contact is a large concern, that's why you'll get all those rolls of Butyl, to stick between the trim closures. The snips are under $20. Your hands may feel it, but you'll get through it. A 3" seamer may come in handy too. they're around $30.
Guest User

8/10/2004