I believe this project involves adding an arcade style joystick and buttons to a PS3. These are 2 sets of parts. Some of these parts required a groove in their edge to accept a plastic “T” molding. The following picture shows a part before grooving on the left, a part after grooving on the right, and the special vacuum fixture in the middle. The vacuum pulls any warpage out of the parts, making sure the slot is perfectly centered all the way around.
On Monday he filled out my contact form and we exchanged some emails discussing details, Monday evening he stopped by with the material (5/8″ MDO plywood), and now (Thursday afternoon) he has precision cut parts ready to assemble. How cool is that?