If you don't have these tools, try the second-best solution: a wood router with a “pattern” bit (i.e. a straight bit guided by a bearing). Just clamp or screw a straight guide to the workpiece. The ...
This “straight edge on top” method works best for 1/4-in. shank router bits because it puts most of the force on the router base instead of the bit's shank. If you have a router with a 1/2-in. collet, ...