Malco MCCB7 7 1/4 in. 56 T Metal Cutting Saw Blade for Standing Seam Roof Panels

One sweet tool!
I purchase two of the Malco 7.25″ metal cutting circular saw blades. I’m working on a project where we were pouring a concrete slab over some 18 gauge, corrugated metal pan decking. We had to recut all of the panels because the slab is curved. The project would have taken a lot of time, and money, to cut with abrasive blades or using a reciprocating saw. Cutting the material would have been hard and with questionable results using a torch. I had planned ahead on this and had these blades in hand before I started. I cannot tell you how easy it was to do the job using the Malco blade on one of my Skil Saws. It was actually fun to do all the cutting. I used only one blade for cutting over 100′ of the metal decking. This translates into cutting over 200′ of 18 gauge material. The blade remained very sharp until about the last 10′ of cutting. It dulled fairly quickly in the last 10′. Other than loosing only one of the carbide points, the saw was in very good shape. I still have one new blade and the other is now at the saw shop being reground for another day.The saw blade seems to run cool and doesn’t appear to throw sparks like an abrasive blade does. Sparks are really bad on products such as painted metal roofing. The sparks burn into the paint causing rust streaking and early failure of the metal finish. This blade throws small flakes of steel that seem to be quite cool and don’t burn. I look forward to using this blade to cut the metal roofing that will be going on this house.Several notes of caution in doing this work. You WILL need hearing protection! You will also need a very good pair of safety glasses. The third thing is that you need to have the correct saw. There are saws specifically designed to use these metal cutting blades. They are sealed to the outside in a way that the small metal “sawdust” cannot get inside the motor. Some even have a little box that catches a good portion of the “sawdust.” The saws are pretty expensive and I will get one in the future, but I have not determined which saw is the best for my needs. What I did in the mean time was use one of my Skil 8.25″ saws. I covered all of the air ducting slots by using a piece of the filter cloth from a perforated, plastic drain pipe and some electrical tape. It was quick, easy and sealed the saw nicely. I have a friend in the steel fabrication business that has several dead Skil Saws because of this very problem. Be forewarned, don’t waste a perfectly good saw; put a diaper on it!

good
The blade worked well for cutting metal roofing. Not sure about durability but I don’t see any issues as of yet.

nice product
I own a metal building company and these blades work great for cutting metal panels. they leave no burn and make a nice clean cut.

Great Blade
Great blade for metal jobs – would use one again and recommend it to anyone – especially to metal roofing contractors

I used this blade to trim single 24 gauge steel standing seam metal roofing panels. I trimmed about 60 linear feet before the blade got too dull to continue.The first 20 linear was impressive as the the blade sliced through like butter, there were few sparks, not too noisy and virtually no metal chips. I was delighted. Unfortunately that did not continue. In the next 20-40 feet the cutting resistance ,noise sparks and metal chips increased. In the last 40-60 linear feet things really deteriorated as I was starting to force the blade through the panel ridges, the sparks became quite obvious, the chip sizes and noise increased. By 60 feet the trimmed edge was no longer a nice clean cut so I stopped.I contacted Malco, the distributor, explained the rapid dulling problem and they directed me to contact their dealer. They were unable to provide an estimate of the linear feet of 24 gauge sheets I could expect to cut before the blade becomes unacceptably dull. Since I bought the blade from Amazon, I contacted Amazon . They were excellent and sent me a replacement blade no charge before I even returned the old one.On the package Malco states they do not recommend sharpening the blade. The old blade cut for a total of about 60 feet. So cutting single sheets of 24 gauge sheet metal roofing could cost $1.00 per lineal foot of cut. That I find rather costly. If it was OK to resharpen the blade the per foot cost would be better but still steeper than I expected.This project was replacement of a roof in a remote location. I am half way through. This coming summer I hope to finish the re roofing and will see if the replacement bade gives better life. ln case it does not I have purchased a 48 tooth Bosch blade as back up and possible comparison if required to finish the job