Some projects call for you to drill holes perpendicular to a surface. But, what do you do if the piece is too large for your drill-press table, and you don't own a guide for your portable drill?
woodworking technique shop tip

Join two blocks of wood at a 90° angle. By holding your drill bit in the corner of this jig, you can accurately bore perpendicular holes with many sizes of twist and brad-point bits.
—Mike Fagan, Elgin, Ore.