Which is best metal for roofing?

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Hello guys,Whats the difference between the Shears and nibbler ?  I was looking at them on Milwaukee's website. I need to cut corrugated metal roofing and was told a nibbler would work ?Any help would be appreciated.wallpapercollege
Reply:The shear would be useless for corrugated roofing, but then again so would a nibbler that is made to cut flat sheet only. I do not know if Milwaukee makes a nibbler for corrugated roofing, but I know Fien does, as I have one of there units. Just be sure to do your homework.Just my  opinion, not from a book, just from the road.Howes Welding Inc.www.howesweldinginc.com
Reply:I have had really good results useing a diamond blade in my worm drive skill saw for cutting roofing sheetmetal. If you use that method be SURE to wear safety Goggles or Face Shield.Scott
Reply:a skillsaw blade turned around backwards works really well, slings a lot of slivers and loud but works great. I've tried the fiber blades as well, don't work as well, they wear down to fast. I always turn the metal over so the ridges are down, that way if you use a circular saw you won't have to go over the ridges, you will have a flat area to push it across.
Reply:A shear that is similar to a heavy duty scissors is hard to use for large or heavy (thick) material. A nibbler usually has a round 'tooth' which moves up and down past an anvil so takes small bites, and is hard to use for ling, straight cuts. I have a MiIwaukee tool, forget what it's called, which has a blade between two side anvils, which rocks up and down so cuts a thin strip from a piece. Needs some clearance below, can't cut over sharp corners well, has limits on thickness, but does work on the standard galvanized roofing sheets. Maybe it's called a shear too? I found it broken, repaired it and have found it worth the price.I've seen the Fein Multi-tasker, or whatever it's called, advertised on TV a time or two; I wonder how the 'blades' last compared to other types of tools/blades?
Reply:When I turned my buddys barn into my shop, I redid have the sheet metal on the building.   Avation hand snips are your friend when cutting cross ways on the bends.  Otherwise an air powered anvil shear works just find.  Plus one costs $20 a pair and the other one costs $60 from tractor supply/ home depot.Lincoln 300 Vantage 2008300 Commander 1999SA250 1999SA200 1968Miller Syncrowave 200XMT350MPA/S-52E/xr-15Xtreme 12vs Millermatic 251 w/30A  Millermatic 251 Dialarc 250 Hypertherm 1250 GEKA & Bantom Ironwokers
Reply:I also agree the saw blade backwards is fastest and easiest.                    MikeOl' Stonebreaker  "Experience is the name everyone gives to their mistakes"Hobart G-213 portableMiller 175 migMiller thunderbolt ac/dc stick Victor O/A setupMakita chop saw
Reply:The biggest sciccor type you can get I been using these well similar .http://www.abccatalog.com/view_produ...uct=2722611274and was using these for ten years before they broke you get the cleanest cut hard to get on the ribs sometimes but makes a clean job of it .http://www.abccatalog.com/view_produ...uct=2722611276now im waiting for my plasma cutter my thumb has been sprained for a year or so tendon about blowed out.maybe im gettin worn out but that snipping has got to stop it hurts anymore.saw makes fast work of it with scrapmetal embedded in anything in the way  but that rough edge can rust ."i'll bet nobody is painting it lol  sniping it is supposed to pinch the zinc and galv over the end and help seal the raw metal from air" snipping is the proper way though.."or shear it.and the manufacture can void any warranty if there is a rough cut edge so if you have to warrranty theese roofs I would be snipping and painting the edge or the valleys may rot out and cause warranty repair later and nothing matchesLast edited by Tony D; 03-26-2009 at 08:19 AM.Lincoln 225 Tombstone,Miller Big 20,Hobart 180,150' Argon,A/D hobart hood 22 Ton Log splitter,79 F350 dump eats 4.75 TONS and still turns cutters,grinders,And a  Hypertherm POWERMAX 30
Reply:for about $40 you can buy the proper blade for your skill saw for this job..local hardware can order it for u. this is a carbide toothed blade nice clean cuts
Reply:A cordless metal circular saw would work well.
Reply:Look up the Malco Turboshear Hd.  It is an attachment for a cordless or corded drill that cuts metal roofing very well with the exception of the standing seam  interlocking sort of roofing which responds to the circular saw method.  I think it was $75+/- when I got one.
Reply:Why turn the blade around? I do alot of metal roofs and a circular saw with a plywood blade does best (on the right-way). I average a-blade a-job. 4 1/2" angle grinder with a thin cut-off wheel is probably the cleanest and works well for chimney & vent pipes. When cuttin' a small hole(under 6" diameter) I use a all but used-up cutoff wheel.Don't let that iron in your lungs, turn to lead in your @$$!!!!
Reply:ever think of a plasma cutter  if not yes the skill saw works well alsoIf you like my stuff you can find me on Facebook.  https://www.facebook.com/theangryanv...ngryanvilforge
Reply:Originally Posted by IronmowerWhy turn the blade around? I do alot of metal roofs and a circular saw with a plywood blade does best (on the right-way). I average a-blade a-job. 4 1/2" angle grinder with a thin cut-off wheel is probably the cleanest and works well for chimney & vent pipes. When cuttin' a small hole(under 6" diameter) I use a all but used-up cutoff wheel.
Reply:The blade cuts the best, but you are supposed to shear it like the roll forming machines.so it crimps the zinc and galvanized  coating, as to seal the raw metal that is the manufactures specific instructions as to not void your warranty or have valleys that rot out prematurely. This is how it is done properly without a saw http://www.expertvillage.com/video/2...ding-panel.htmLincoln 225 Tombstone,Miller Big 20,Hobart 180,150' Argon,A/D hobart hood 22 Ton Log splitter,79 F350 dump eats 4.75 TONS and still turns cutters,grinders,And a  Hypertherm POWERMAX 30
Reply:Well after seeing Tony cutting roofing with the plasma cutter I would say that is the way to go.Co-Own CNC shop:Miller :1251 plasma cutter, MaxStar 700 TIG/Stick, & XMT 456 Multiprocess Welder.&  2 Hypertherm HPR260's Plasma CutterSorry I had a bad stroke but now I am back.
Reply:Yup sure is   I free hand cut some angles for the valleys ,and you can't even tell their a little wobbly from the ground lil bit of oil based paint on a roller seals the edge great. All the edges on this one were painted, That's a step none of these guys do and it will help as this roof is tooo nice to rot out early not to mention a pain in the a$$ to do again for free.The house has log wood siding on it now looks really niceLincoln 225 Tombstone,Miller Big 20,Hobart 180,150' Argon,A/D hobart hood 22 Ton Log splitter,79 F350 dump eats 4.75 TONS and still turns cutters,grinders,And a  Hypertherm POWERMAX 30
Reply:I was going to do the roof of my 1795 farm house in steel but the nice folks at the National Historical registrar say no. I had to use what resembled the original roof. The original roof was done in slate.Co-Own CNC shop:Miller :1251 plasma cutter, MaxStar 700 TIG/Stick, & XMT 456 Multiprocess Welder.&  2 Hypertherm HPR260's Plasma CutterSorry I had a bad stroke but now I am back.
Reply:Hey they have stamped panels 3'x5' that are stamped look just like slate, shingles, cedar and so on.. LOL if you could do that  WOW slate must be expensive these days was 500.00 a square many moons ago for the 1" stuff on the churches in Detroit. We always pulled it put it in buckets carried it down SAVED every piece.Put a new underlayment on the deck and put it all back on to protect the ice gaurd rubber stuff. like a ceramic roof the underlayment is the actual waterproofing the slate keeps most of it out though. my 2 cents if it helps anyone.   As you probably done something with your roof alreadyLast edited by Tony D; 04-17-2009 at 09:40 AM.Reason: As you probably done something with your roof alreadyLincoln 225 Tombstone,Miller Big 20,Hobart 180,150' Argon,A/D hobart hood 22 Ton Log splitter,79 F350 dump eats 4.75 TONS and still turns cutters,grinders,And a  Hypertherm POWERMAX 30
Reply:PLASMA CUTTER!  For metal decking I use a 2 stroke K-12 cut off saw and a hand held 4" grinder with a parting toolVantage 500's LN-25's, VI-400's, cobramatics, Miller migs, synch 350 LX, Powcon inverters, XMT's, 250 Ton Acurrpress 12' brake, 1/4" 10' Atlantic shear,Koikie plasma table W/ esab plasmas. marvel & hyd-mech saws, pirrana & metal muncher punches.
Reply:Originally Posted by NiteskyDon't know if they still do this or not but they USED to.  Carpenters used to turn the blade backwards to make for a smoother cut and to help the blade last longer.  When using a hand-held circular saw you have less trouble with kick-back. Used to be the standard method for sheet metal and arborite.  It works especially well for aluminum but I must admit I haven't considered using this method for sheet steel roofing.
Reply:Shears work like scissors; they cut a slice in the metal and move along the slice. On the other hand, nibblers take a complete section out.Midwest Metal ProductsMetal Wire Forming Fan Guards Delta-Larm
Reply:when i did mine we cut through the ridges with a air cut off tool then used air shears to cut through the flat
Reply:Metal roof is the best choice for houses that are situated in places which experience heavy snowfall. The metal roof does not allow the snow to settle down on it and it slides down easily. Thus it prevents roof damage or collapse due to the weight of snow to get whole info on roofing you can refer to :-http://generalcontractors411.com/
Reply:I have used the sheet metal shears cutting metal studs in commercial work, they work more like regular sheet metal cutters attached to a drill motor for ease of cutting. A nibbler is a little different as it removes a little section of the metal as it cuts and it looks more like a barrel type jig saw. Both can be electric or air operated.I would think on roofing the nibbler would be better because it applys its own relief cut.Power nibblers have a tiny punch that removes enough material for the tool to advance.Their advantage is that they can turn corners in a radius no larger than the punch itself.The sides of the cut are rough, but remain flat, and since they are technically sheared, they require no additional treatment for galvanized roofing (unlike sawing, or plasma, which requires that the edges are painted afterward).Power shears come in two varieties:With three blades (usually, just the center one moves), there is a scissoring action, that removes a strip of metal that is ejected out from the back of the blades.  They don't turn well, but both sides of the cut are smooth, but sharp, and flat.  This type of cutter is often called a nibbler, when it is hand operated:  http://www.harborfreight.com/cpi/cta...emnumber=65895With two blades, there is more of a punching action, where an angled blade from above moves against the fixed blade below.  Like aircraft shears, there is some bending of the metal on one side, and they turn better in one direction than another (I can cut out a dime to the left, but only a silver dollar to the right)Although I see that HF is selling something like this, I HIGHLY recommend that you check out the "Bosch 1500C".They can be had on eBay for under $200, and are truly unbelievable if you're used to tin snips.  It plows through stainless that I can just barely start a cut in by hand, and leaves a cleaner cut on thinner stuff than I can do by hand as well.  In fact, I only keep my aircraft snips around for cutting strapping, and things other than metal now.