You can see my advanced sandpaper technique in the top of this image. I wrap a piece of sand paper around a scrap piece of wood and start sanding. I had four people help me sand these, and it still took many hours. I plan on making and selling these soon, after I invest in a power sander. =)
I had some scrap lumber laying around so I made a heavy duty base for the game. It is important that wherever you play the game, it has a flat level surface.