Using a chisel for cutting door hinge slots

How do you cut hinge slots in a sheeted foam core wing that has a 12 cap without damaging the foam ahead of the balsa cap?

There is one good way to make hinge slots, and that is by using a rotary cutting wheel in a drill press Set the blade on the center,of the part

dukes of hazzard slot car set slot profiles The hinge has slotted holes to support adjustments and a ratcheting clamp handle for locking the hinge in position It also features slot

slot machine zapper Plastic Hinge for V-Slot and other 2020303040404545 Aluminium Extrusions Grab some Low Profile 8mm Screws and Drop-in Tee Nuts to mount the hinge