[mvaughn]

Not knowing anything about cabinetry I'll assume that most doors and drawer faces are made with standard sizes in mine.

Why not create a set of Dies that nest in each other. Have the first die/jig pocketed to fit your largest door in the center of it and clamp or use pins to hold it in the center of your table. Then you can just drop door panel into it and it's centered.

Next pocket the next door size down into another die/jig that is cut to the size and fits in your first die/jig.

Continue on down until you have a set of jigs that hold each of your doors and drawer faces.

Kinda like those Russian nesting dolls.

I can draw a picture if my explaination doesn't make any sense. Hopefully I didn't misunderstand the question.