DEWALTDWA7747 14" 66T Heavy-Gauge Stiff Plate Ferrous Metal Cutting Saw Blade

I have a small fab shop and we use this daily for cutting everything from 1" square steel tube .100 wall all the way up to 5"x 3" .250 wall steel tube, 1/8",3/16",1/4"and 3/8" x up to 4" angle as well as aluminum extrusions 1",2",3" square aluminum tube (a little wd40 on the blade while cutting aluminum helps keep the teeth clear) and I usually get a couple of months out of the blade before it needs sharpening, I've gotten the same blade sharpened a few times before it needed retirement, usually due to lost teeth. I have four of these blades and cycle them, when they get dull I switch it out and send it out for sharpening.I haven't kept count of how many cuts we're getting but I would guess at least a thousand as long as the material is clamped properly and supported when cutting long pieces, if the work piece moves while you're cutting it will remove teeth in a hurry ruining the blade.I've got an abrasive blade chop saw and it hasn't been used in years other than to cut hardened shaft like thomson or superior shaft since I bought the Dewalt dw872 that uses this blade, it makes cuts cleaner, faster and more square than the abrasive blade ever could, without all the dust!Also a word of caution you can't use this blade on an abrasive blade machine because the wheel speed is too high, and don't use it on hardened shaft or you'll get a very short life out if it speaking from expensive experience.

DO NOT INSTALL THIS BLADE IN A PORTER CABLE MACHINE. It will turn too fast and you will be one of the morons complaining about the short life of the Dewalt blade. I bought this as a backup for the DW872 saw from Dewalt. Remember that it has to turn much slower than most all abrasive saws turn, and turning it faster will just shorten its life, and possibly your own. This means that turning the bladed faster than 1300 RPM can be very dangerous, and the danger is all in relation to how much faster you turn it, and what you cut with it. Even the saw it is made for, which runs at the correct speed, must be used properly to prevent damage to the blade, to the work, and to the user. Never rush the cut, the slower you go, the less heat and damage to the blade you will get. I cut angle iron, like bed frame material with ease. It cuts aluminum fast an easy. Always run the blade no faster than the specifications say to run it. The least you will do is ruin the blade, the most you will do is ruin your life.

SENT ME A NEW ONE AND HAD NO ISSUES!A tooth fell almost immediately!Was cutting mild steel, only 1/8” with hardly ANY pressure at all!I am hoping this is an isolated even and it was just this particular saw that came deffective. I have other brands that have lasted quite a bit of constant use before getting them sharpened!

Here are some answers to questions that I had a hard time getting the answers to:1. Is the DWA7747 the correct blade for the DW872 saw? Yes2. Is the DWA7747 the replacement for the obsoleted DW7747 blade? Yes3. Is the photo on Amazon the correct photo? No, the blade show in the photo is not the DWA7747. The center hole of the DWA7747 is a true circle.4. How many teeth on the DWA7747? When I bought my blade the description stated 68 teeth, actually the saw has 66 teeth.5. Does the DWA7747 cut as well as the older DW7747? Absolutely not. The cut with the new blade is not nearly as clean as with the old blade. Not sure why Mr. Dewalt obsoleted the DW7747 and replaced it with the DWA7747, but from my initial experience, the original was a better blade than the new and (not so) improved version.

I probably made 500+ cuts with this blade in 1/4" steel angle, and square tubing before it finally started getting dull. I even cut quite a bit of heavy aluminum stock also with really good results. I was so happy with the performance I bought another identical blade and sent the old one to be sharpened. If you don't bear down and let the blade do the work you will get lots and lots of clean straight cuts.

This blade wasn’t just used it was used up and worn out! Crap it’s not even resharpenable because it’s cracked. It’s obviously missing two teeth which makes it an obvious misrepresentation.

The first one lasted for 3 years of moderate use, estimated 1000-3000 cuts (no idea). I bought a cheaper one to replace the 1st and it only lasted 1 year. Ended up buying another Dewalt.

This is an overall good blade. We chop some steel and a lot of aluminum. This is the same blade that came on the saw. Since we chop a lot of aluminum we purchased aluminum specific blades. This blade is much better on aluminum than those were. Their shipping was excellent.