An angle grinder is one of the most widely-used power tools, in part because it’s fun to use and in part because it’s so effective at removing material. Unfortunately, among power tools, it’s also ...

When the batteries for 4.5-in. angle grinders started coming in larger configurations, the motors had more torque, higher RPM, and sufficient run-time for nearly any project. Thus, these tools became ...

Circles have different angle properties, described by a number of theorems. This is one of two guides on circle theorems, with this guide covering the following: the angle subtended by an arc at the ...