Whenever I need to install pulls on cabinet doors, I begin the job by making a jig to locate the screw holes. The jig (see drawing) is a piece of thin plywood ( 1/4 in. to 1/2 in works fine) bordered on two sides by 1×2 fences that meet at 90°. Grooves in the 1x2s accept the plywood insert, creating a fence on both sides of the jig. Once I have decided where I want the pulls to be in relation to the corner of the cabinet doors, I drill corresponding holes in the plywood insert, as shown.
To use the jig, simply snug the fences against the corner of the cabinet door where you want to install the pull, and drill your holes using those in the plywood as a guide. For the adjacent door, flop the jig and you’re ready to drill.
Andrew George, Richmond, VA