Changing the size of the diamond grit to a smaller particle / grit size will affect the performance of the diamond tool in the following ways:
Working with a single segment will increase the pressure on each segment.
Working with a double segment will decrease the pressure on each segment, reducing the wear rate on the diamond segments. This will lead to a smoother scratch pattern, and will also reduce the load on the machine.
Half Set Diamonds placed at three alternating positions on the diamond holder disc (diamonds at four alternating positions).
Full Set Diamonds placed at each of the six positions on the diamond holder disc (diamonds at all eight positions).
Power and Weight - The power of the machine is a very important factor. A more powerful machine enables the operator to choose harder bond tools.