|Robert Larson 800-1400 3/8" Corner Chisel|
800-1400 Corner Chisel
Use your router first to remove most of the material for a hinge mortise, then place this self-aligning chisel up against each mortise corner, and hammer the spring-loaded chisel shaft once to cut a perfect 90 degree corner for a perfect-fitting hinge plate.
Cutting of 3/8" will work to a depth of 5/8".
Corner Chisel: 3/8"