I'm thinking about making a small panel gauge. Around 16" capacity works for my needs and I'm going to probably go with a triangular bean and a wedge to lock it in place. I want a knife style cutter. A wheel shape or a flat cutter would work equally well in my mind. I'd really like a thin cutter with a slot in the middle. I could mount it in the end with a screw and have a bit of depth adjustment.

However I'm open to any ideas on what to use and how to attach a knife cutter to my panel gauge.