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Tool Talk Discussion Forum

What's the best way to cut corrugated sheeting?

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Bob

04-27-2004 10:15:21




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I've heard that you can put a blade in backwards on a circular saw and have at it. I'll be putting up a small pole shed and would like any suggestions on how best to cut this stuff. Thanks!




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Scotty

04-28-2004 15:05:50




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
If You cut the metal with a grinder, or a high speed saw it will rust a lot quicker! See if You can rent a tool for cutting metal sheets, or use shears.



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Dave Sherburne, NY

04-28-2004 08:55:18




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
Around here, you just order the length you need, to the nearest inch.



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Chuck, WA

04-28-2004 08:50:27




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
I'm going to be cutting a little for closing under the eaves on my pole barn. I haven't tried it yet, but am going to try an air-powered nibbling tool. For the thin sheet metal, it sure cuts fast and clean. I'll run it along a straight edge, and will notch out with it as well for the ridges using a wooden (maybe even cardboard) template. It makes a slightly wider kerf than a circular saw blade might. I bought this one on a whim at harbor Freight - on sale for too cheap to pass up - under $20.

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mj

04-27-2004 19:54:18




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
What T_Bone said.



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tortmort

04-27-2004 17:41:42




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
4 1/2 inch grinder. Metal building contractor uses Metabo 5" ??? in my area.



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Andy

04-27-2004 17:00:44




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
I bought a millwakee duckbill shear,(looks like a drill with a shear on the end) It takes a bit of practice to cut smoothly across corrugated but once you get the hang of it, it works great.



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T_Bone

04-27-2004 14:42:15




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
Hi Bob,

If your cutting off more than a 1" then a circular saw with a abrasive blade for a nice straight cut. The key to not binding the blade is looking at the line with the point of the saw longest from the blade. Just like cutting plywood.

If trim cutting, less than 1", then Wiss-16 bulldog tin snips work well. With the 3-1/2" jaws it's very easy to make a straight cut without "fishhooks".

T_Bone

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Vern-MI

04-27-2004 14:39:38




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
Anyone ever try using the new Craftsman twin blade saw?

How about a plasma cutter?

What is the best way to seal the edge against corrosion once it has been cut?



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Dan in Wisconsin

04-30-2004 11:01:48




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 Re: Re: What's the best way to cut corrugated shee in reply to Vern-MI, 04-27-2004 14:39:38  
Hey Vern, thanks for the heads up, I think. This thing is "on sale" through tomorrow. I had the gal order me one at the local Sears outlet. Aked if she knew anything about how it worked and she said she knew nothing. Did say Sears has a customer satisfaction policy that would allow me to return it if I didn't like it. Have used other methods for cutting sheet steel and the only one I like is the Milwaukee electric shear but works only when going parallel with the ribs. Those metal cutting" blades do work but not very well. This thing will extract $161 from my "cache" including tax. Hope it does the trick as I have much work for it if it does.

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evielboweviel

04-27-2004 16:26:47




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 Re: Re: What's the best way to cut corrugated shee in reply to Vern-MI, 04-27-2004 14:39:38  
a set of power shears is supposed to seal the edge as it cuts due to the "wiping" action of the cut. always wanted to try it never have bought a pair yet.
Ron



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T_Bone

04-27-2004 18:01:36




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 Re: Re: Re: What's the best way to cut corrugated in reply to evielboweviel, 04-27-2004 16:26:47  
Hi Vern,

In 35yrs of working sheet metal, I've never heard of someone being concerned with edge corrosion. Why I can't tell you other than I've never seen SM with a problem from leaving the cut edge exposed. You would think it would be a problem as get a scratch on the surface and it'll sure show up as a problem really quick.

*******************************************

Hi Ron,

If the shear rolls the cut edge then it's out of adjustment and it will quickly dull or break the blade edges.

The blades either need sharpening, adjusted closer or both.

On the other hand if a blade breaks easy then the blades are adjusted too close for the thickness of metal being cut.

T_Bone

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RT

04-27-2004 13:43:06




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
Bob,an old combination blade turned backwards works real well. You will only use that blade for metal siding cause it won`t be good for nothing else and by all means wear ear protection its loud. Saw zall works but not much control. I put up metal buldings as extra income, Thats what we use. RT



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John A (TX)

04-27-2004 12:19:03




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
A sawzall along a 30- or 40-foot eave?? Whatever works, I guess. I think I'll stick to the abrasive blade in my circular saw, tho. Like the man said, makes lots of sparks & stuff flying around, so good eye protection's a must.

~ja



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Hal/WA

04-27-2004 21:45:04




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 Re: Re: What's the best way to cut corrugated shee in reply to John A (TX), 04-27-2004 12:19:03  
Ear protection too--reeeeeal loud!



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RZ(WA)

04-27-2004 12:36:46




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 Re: Re: What's the best way to cut corrugated shee in reply to John A (TX), 04-27-2004 12:19:03  
Yep, a Sawzall works for me ! Unless I can find where I left my power shears. The problem I keep running into with a circ. saw is binding of the blade as the cut is being made, and is a bit more awkward to use.



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JD-Tractor

04-27-2004 10:49:33




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
If I said it once.I've said it a thousand times,Use a sawzall with a metal blade geez.....(LOL)



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TimV

04-27-2004 10:34:12




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 Re: What's the best way to cut corrugated sheeting in reply to Bob, 04-27-2004 10:15:21  
Bob: There's several long threads in the archives covering this topic. For cutting across the ribs, I usually use an abrasive blade made for cutting steel. However, I've also used a reversed saw blade such as you describe and it works fine. Both methods are VERY noisy and will throw sparks and metal filings in all directions. Wear the best eye, ear, and hand protection you can beg, borrow or steal--the edges will be hot and sharp when you're done cutting! For cutting lengthways on a sheet (parallel to the ribs) I usually score the cut with a utility knife (guided by a clamped-down straightedge) and then bend the sheet--the steel will "pop" at the score mark. This method is quicker and more accurate than cutting, at least for me.

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