Face milling

Selecting a corner angle

When the finished product requires a 90° corner then a shoulder mill needs to be selected. For general milling or planing of open surfaces is to be carried out then a typical plain type mill should be selected. This is because the chips generated are thinner and therefore the load on the cutting edge is reduced offering longer tool life. For plain milling cutters there are a number of corner angles available. Typical corner angles for plain mills include 15° , 25° , 30° and 45° . For each corner angle stated the machining properties vary.