This is probably the forth diamond saw blade I’ve had. However, this is the first with the segmented rim. A couple items I noticed. This blade is thinner (approximately 0.80” vs. 0.90”) at the cutting rim. I think this is an advantage, similar to the thin kerf table saw blades. The other difference is the height of the cutting rim. This blade has a ½” ring, vs. 0.25” on my older blade. I’m guessing this is to help give additional clearance to the blade when cutting with a hand held 4.5” grinder. However, I suspect there is another advantage. One of my projects I made bull nose edging on tile, where I needed the tile width wider than what is available in the store. I use one of these grinders to basically round over the edge, and finish off the edge with a belt sander. Turns out very nice. I suspect this ½” rim would have some advantage for this too. I also like the 4.5” diameter, vs. the 4” diameter of the other blade. There are times when the extra cutting depth has an advantage. It appears the diamond concentration on the blade is the same as the other units I’ve had.
by BigMike76