Suppose you need to modify an enclosure by drilling a hole in it to install a drain (or for some other purpose). How can you do this in a way that leaves a perfect hole with a minimum of work? First, ...
If you're trying to drill perfectly perpendicular holes through a piece of wood and finding yourself continually frustrated, try one of these quick hacks. Got an old CD lying around? Of course you do ...
Almost any general-purpose twist bit will do a decent job of drilling holes in metal. In fact, most drill bits labeled ...