Delta Diamond Piranha Premium 4 1/2 Inch Tile Diamond Saw Blade, Continuous Rim, 7/8"-5/8" Arbor, Dry or Wet Cutting Porcelain & Ceramic Tiles (4.5")

I used this diamond cutting disc for shaping a bullnose profile on my granite slab project. It worked like I expected. It did a good job and I could control the cutting without taking too much material at once. The disc also cut very good without chipping or breaking the granite. It didn't show any signs of wear or breakage of the cutting face composites. It is a great grinding/cutting disc and is of good quality construction.

I made several dry cuts to a marble countertop with my old grinder. The Grinder got very hot and I was afraid that the grinder would not withstand the harsh treatment that I was subjecting it to, or that the disc would melt due to the friction caused by cutting the marble stone dry. But I managed to finish everything without a hitch. The cuts came out perfectly aligned and without splinters. And the disc was left as if it had not been used. Ready for another project

I'm new to cutting porcelain tiles, so I don't know what the benchmark is. I bought a nice quality Diamondback 7" overhead tile saw to cut tiles for my bathroom renovation. The first 10-20 cuts I was surprised how much chipping there was. Probably 20 small chips along a 12" cut. The chips were small, about 1-2mm wide and or long, but I was expecting a nice clean cut. It seemed to get a little better after 20 or more cuts. I probably made 75-100 total cuts and it did not get worse. Once the tiles were installed I'll admit it's a little hard to see the chipping.I tried to do some 45 degree cuts (miter the edges) and this turned out with massive chipping. This was disappointing and forced me to use either bullnose tile or aluminum profiles for all outside corners. I never did try the Diamond Back saw blade that came with the saw I assumed it would be worse.

Unlike some who were not happy with the durability of the blade (for what I would consider reasonably large projects) I would not expect/count on a blade at this price range to be "commercial grade". With respect to not cutting cleanly I really can't comment. After doing some research I purchased this blade for a very specific job of trimming installed uneven porcelain floor tile edges to form a straight grout line to a door threshold. My concern was cutting less than 1/8 of an inch off of tile edges and maintaining a perfectly straight line. Have never cut tile "freehand". Originally thought I would have to create an edge guide but experimented on a couple scrap pieces and blade did a great job of maintaining straight-line using handheld grinder. Only needed to cut a few tiles but very very happy with results i.e. very clean straight cuts. Very satisfied with results.

Nice! I had to cut through about 48” total of 5/8” marble countertop for a kitchen remodel. This worked well. Put it on a Dewalt circular saw, had the area enclosed with taped-up plastic, and a shop vac running the whole time. Cut well and dust was minimal. Beat the $800 local shops were quoting, and it is done where as they were to 8 weeks out.January 2021 - cut about 8 lineal feet of (soft) slate and then another 4 feet of granite with the original blade. That pretty much used up its life. Not bad for the price. By this time I had upgraded to a Skil saw with a wet cutting attachment (outside of course for these wet jobs).I ordered another one and got through the last of my granite job.

After about 30 cuts the bushing for the blade mount came loose. Once the bushing came loose, the blade would vibrate during a cut and began chipping tiles. I bought this blade to cut ceramic floor tiles. It worked good for a while, then it began destroying tiles. The bushing was not part of the blade and was staked to hold it in place. I purchased a different blade to finish the project.

I purchased this item for my Rigid 7-inch 5/8 arbor tile table saw for wet saw application of porcelain tiles. The saw blade is designed for a 7/8 arbor but uses a flat bushing for a 5/8 arbor. The thickness and rigidity are good. The tile saw blade rotation, though, seems wobbly and eccentric and further inspection indicates that the 5/8 dia flat bushing does not sit well on the triangular hole of the saw. The bushing is really just a washer of the same thickness that is kinda tricky to install the interference fit bushing properly into the hole. The bushing should have been designed with a flange to engage and lock the triangular hole properly just like a regular bushing. I couldn't believe that the bushing is being held in place by just a paper sticker. After finagling with the bushing, I did get a steady rotation but the porcelain tile edge cut is not as crisp compared to the saw blade that came with the original Rigid table saw. This saw blade might work best for a 7/8 arbor size tile saw. I returned the saw blade and the seller graciously refunded me my money.

I have a wet saw that I purchased from a chain store several years ago for projects around the house. The blade has dulled through the years of use and the blade started to chip along the cut line. I have replaced it with this blade and it cuts perfect again ( no chipping ) and cuts faster than it ever did. Great product at a very reasonable price.