Finish the process by using a strop or a honing rod to polish the edge and remove the burr. This finishing touch is essential, as leaving the burr can make the knife seem sharp initially, but the edge ...

Hot glue guns are pretty simple beasts: there’s an on/off switch, a heating element, and a source of current, be it battery or wired. You turn it on, and the heater starts warming up; ...

One of the perennial challenges of building robots is minimizing the size and weight of drive systems while preserving power. One established way to do this, at least on robots with joints, is to ...