Summary: I wish I had listened to others and bought this saw years ago. It takes less than half the time to cut than my abrasive saw. It has been going non-stop now for three weeks and the blade is just starting to show signs of wear. I would have been through an entire case of abrasive blades by now. The only flaw I discovered is with the keeper pin that the saw hinges on. It can work it's way loose allowing the blade to hit the frame.
Summary: One big warning: don't cut stainless. Even with the stainless blade: DeWalt DW7749 14-Inch 90 Tooth Stainless Steel Cutting Saw Blade with 1-Inch Arbor It blew up on me after about 50 beautiful cuts on 1-1/2" 16 gauge square tube; fairly light stuff. Then about 20 teeth were missing or chipped in short order. Thankfully, the Amazon guarantee made it worth trying out for no risk except for the wasted time. But overall, it's a pretty nice cheap alternative to a cold saw.
Summary: I have been using this saw for approx 2 years in a farm shop. I cut everything from alluminum to hard steel. I have even cut 3 inch heavy wall tubing with this saw and still on the original blade and that is after making all the cuts for 280 foot of pipe fence just recently built. There is no burrs and the cuts are cool enough to handle after you make them. The best part is you don't loose any of your cutting diameter after several cuts like with the abrasive blades.
Summary: I bought this saw for a small, part time welding business. It immediately started to pay back. The first project I used it on, my brother made almost 300 cuts in one day, on one blade, cutting 2" square tubing, 3/16" wall thickness. If we had been using abrasive blades, he would have had to stop to replace the blade at least 5 times, probably more.
Summary: I've been sculpting and working with metal for over a decade (forming, welding and forging) and I own thousands of dollars worth of metal fabrication equipment including commercial duty abrasive cutoff saws and plasma cutters. The DeWalt DW872 Carbide Cutoff saw is simply amazing. Other reviewers grip about it not being square and the high cost of blades. I've not had that problem.
Summary: There are really two issues here: carbide saws for metal cutting, and this particular tool. The carbide blade has severe limitations. It dulls relative quickly under ideal circumstances, and can be wrecked on one cut if you hit a hard spot in the metal: most common shapes of steel are made from scrap, including ball bearings and spring steel. Only thin wall tubing seems to be exempt from this. Cutting thin wall seems to be the only good use for this type of blade.
Summary: I got tired of burning through band saw blades so I figured I'd give this saw a try. The cuts are very nice with little blade deflection. The speed is better than any other type of saw I've used. I've made about 50 cuts on medium to heavy gauge tube, pipe, bar, and angle, and the blade is shot. Completely my own fault, as I became more confident with the saw I was putting too much pressure on the blade, material got hot, started throwing sparks, and stopped cutting.
Summary: Clean, fast cuts. Be careful and DO NOT force it through the piece TOO FAST. It still cuts steel pipe faster than anything before it. Take all needed precautions for flying debris and make sure the work is held securely. And, don't let your welder use it if they do not how to, first. Otherwise you get missing teeth and a bent blade.