I ran another experiment box. most wood would just bend if properly treated but Oak Plywood I think would provide the toughest challenge and two 180 degree bends about as tough a job as I could think of. I first tried with cutting a hole for a box lid, and also was not deep enough with the engrave, the second with no lid and almost deep enough worked out very well. It still needs to dry a bit to hold its place but I was able to get a few fair photos.
oh yes instead of grooves I made a living hinge design that just did not go all the way through.
