Blades With Continuous Rims
Continuous rim blades are easy to spot. Unlike other diamond blades whether bridge saw blades or turbo blades, a continuous rim diamond blade ahs no segments. That is to say that the outer edge of a continuous rim saw blade is, well, continuous! But that begs the question: "What is the reason for this?" Additionally, some may wonder what kinds of materials are these diamond blade made to cut? Let's answer both of those questions now.
Purpose of A Continuous Rim
With most blades designed to cut hard materials, the blade has protrusions called "segments" and the those segments are what have the diamond in them. There is a gap between each of those diamond segments. When a segmented diamond blade rotates, each of the segments "bites" into the edge of the material it is cutting. In reality what is happening is the edge of the segmenthits the edge of the material and pretty much knocks off or, rips off, the edge of the material insdie the kerf of the cut.
This works okay for natural stone materials. But there are other materials that are not just hard, but also have the tendency to be brittle. For example, ceramic, porcelain, and glass are all examples of materials that do not do well when a segmented blade is used to cut them. It isn't a question of how sharp the blade is. Rather, it is a matter of the edge of the segments colliding with the edge of the material. The impact of the segment hitting a brittle material causes it to chip and in some cases even break.
Continually Cutting the Material
You probably have already concluded that the benefit of the continuous rim diamond blades are that they do not hit the material. And that is exactly right. COntinuous rim blades continually cut the material rather than tearing through it. The low impact of these blades make them suitable for the following materials:
- Ceramic Tiles
- Porcelain Panels
- Sheets of Glass
Each of the materials in the list above is very hard and to one degree or another, brittle. So it is important that the blade truly cut the material and not rip, bash, or tear into it.