DEWALT Diamond Blade for Masonry (DW4712B), Silver, 7-Inch, Packaging May Vary

I purchased this to retrofit the installation for a built-in barbeque grill. It required cutting a 10"X36" notch out of a rock veneer wall with steel wire reinforcement and multiple heavy gauge metal framing elements. This blade cut through them all and is not showing significant wear. Yesterday I had to cut about 1" off the end of a 3" X 8" X 26" sandstone plank. This blade went through it in about 2 minutes. I had to finish the last bit with a diamond grit Sawzall blade but the diamond circular blade goes through material about 10 times faster so it makes the entire job quick. During the grill installation I needed to cut a 1.5" thick granite slab about 12" long by 3" on each side of the grill. This blade made those cuts in under 5 minutes. I still needed the sawzall diamond blade to clean up the inner corner but the circular 70 made 95% of the cut in less time than the sawzall needed to do the 5% cleanup.NOTE: Do not be fooled into buying an expensive cement saw unless you need to do a lot of cutting. I used a circular saw I picked up for $16 on amazon and it worked great. Yeah the dust will kill the bearings but for occasional use I would be surprised if I didn't get another 80 hours of cutting out of the cheap saw. I found that for detailed and cleanup work it is very helpful to also have a 4.5" diamond blade for a standard angle grinder which cost me $19. I also found that some cuts were too difficult to reach with circular saws or grinder so I used a 8" long diamond grit Sawzall blade that cost $13 and a cheap Sawzall that cost $19. Without all three tools the job would have been difficult.My only complaint is that it is easy to loose the brass spacer and it fell out of the center the first time the blade was changed. It is not a serious problem but you do need to manually place the brass spacer before placing the saws support washer. I used a large ziplock bag to keep the saw blade and the spacer together for the next job.

This was my first time cutting concrete. I cut several 1-3/4" thick concrete patio pavers using 3-4 passes on each paver, adjusting the blade a little deeper with each pass. The blade cut very well and faster than I expected. My project involved curves which I was able to achieve by lowering the blade onto the cut line in small increments, following the line. It worked very well. It's a good idea to wear ear plugs and safety glasses. Dust is also an issue so a mask is a must, but spraying a little water on the cut line periodically helped reduce the dust. This project was about 140 square feet involving 60 16x16 pavers and the blade showed no loss of cutting ability. It should be good for another project next summer.

I needed to replace the rear refractory panel in my fireplace. I quickly learned that they are quite expensive to have replaced if you pay for labor and the installer custom cuts the panel for you (around $1000). The panels break very easily, and I believe the installers charge so much in case they break a panel and have to buy another one. Anyway, I decided to order a generic-sized one and cut it myself. the panel was around $350. I needed a concrete blade and ordered this masonry blade for $14. It worked like a pro! I was able to make a clean, straight cut without chipping or cracking the panel in a matter of minutes. I installed the panel without breaking it, so I saved around $600! I can't comment on the durability of the blade because so far, I've only used it the one time.

It worked wonderfully on both my miter and circular saw cutting through basalt - even better in the circular saw actually. Excellent price and well made. Note: it is not intended for portable (cordless) circular saws.

I was happily surprised at how well this blade worked on my skill saw. Granted I haven't cut all that much but the 3 ft by 2.5" deep cut I made (in 1/2" passes) in concrete was quick and fast. I used water during the cuts. The blade still looks in great shape. The saw isn't a worm drive model but still powered right through and barely bogged down.