A drill point gage will do the trick for both, but you can also make do with stuff you already have around, including a simple pair of hex nuts to eyeball the appropriate angle. With that ...

The un-deformed chip width is equivalent to the length of the drill lip, which depends on the point angle as well as the drill size. For a given set-up, the un-deformed chip width is constant in ...

The drill is available in standard lengths of 6-times diameter, and can be run with or without coolant. It is recommended for materials such as steel, titanium and nickel alloys, aluminum and copper.

Plumbing, electrical work, cabinet installation, and automotive repair can all involve tight spaces where a full-sized drill might not fit. In these situations, a right-angle drill can take a job ...