Most diamond saw blades come in two parts:
- A metal blade core
- Numerous cutting segments attached to the perimeter of the core
A saw blade’s core doesn’t do any of the cutting, instead it holds the cutting segment — much like the center of a wooden saw blade holds the teeth.
The cutting segments cut the material using an abrasive grinding action. These segments have two ingredients:
- Diamonds, in the form of sandpaper-sized grit
- A metal bond
The bond is usually a metal powder which has the diamonds mixed into it. The bond powder and diamonds are usually sintered – that is, compressed without melting – into a cutting segment, then welded onto the core of a saw blade.
Sintering is a relatively low-tech and cheap way to produce cutting segments for diamond saw blades. This, in turn, has created a profusion of relatively low-cost diamond and other superabrasive blades for a variety of applications.