Playing with some small-scale wood inlay this week, I made these Celtic key pattern pins. The key pattern and larger key square are 30mm x ~3mm thick. The smaller key square is 25mm x ~3mm thick. These are all hardwood maple inlaid with walnut. Everything is cut on the laser, sanded to 650 grit and, finished with wipe-on poly. I attached pin backings with wood glue.