Found these tiles from my wife's stash. They were made a bit hot so the colors are muted, but waste not....
Have a ton of red oak, so a beveled frame. The tiles were glued to a 1/4 BB ply base with resin colored white. The resin was forced out through the tile joints and cleaned off to provide some protection from water seeping through. Pressed between two cauls while drying to make for a flat base and easy dadoing.
Got to use my aux miter gauge fence at 30 degrees which lets me keep the saw blade at 90. Miter set to 30.