I did these doors for a restaurant . The hardware is from Real Sliding Hardware , it’s not cheap but man is it smooth and heavy duty . I did a mock up of the divided lights in tape first to see how it looked and worked out . They originally wanted a 2×2 design but it didn’t look right so I made the 2×2 on card board and had it layer over this 3×3 . The client saw her design first (2×2) then I showed her my version and she liked that better . The grooves were done with my festool router using festool tracks , that worked great . The door is made up from 1x clear pine sandwiching 3/4 birch ply . The show edge of the doors are mitered with 1x mitered to match to give the illusion of a solid door .