Bill Tisdall, Development and Turning Products Manager

The most popular turning insert in the industry is the 80 degree diamond (CNMG insert). Known for its balance of versatility and edge strength it is usually the first choice of CNC programmers. However, many customers use the four 80 degree corners and discard the other four cutting edges found on the 100 degree corners. While applying the 100 degree corner is more difficult because it cannot face to a shoulder and requires a separate tool, there are applications where a tool like this can help you. Take a look around your shop for OD roughing turns that do not require a square shoulder. Also facing operations are a perfect place to apply the 100 degree corner. Both of these types of applications allow you to make full use of the CNMG insert.

Learn more about insert options from Sandvik Coromant.