I made this with wood cut from a dead mesquite out back. It has been dead for a long while and was very dry wood.
Each square is about 1.5". Overall it is 9x12. This is after the first coat of butcher block conditioner. I will put 3 more coats on it to get it seasoned right.
There are some spots that look like gaps or cracks but it is just really dark areas of the wood.