Here are a few gobans that I made in 2004. If you are in the area of Montreal and would like to buy one, contact me. The first image is the first goban I made, not for sale :)
1 3/4 inches thick made of walnut. My first attempt to make a go board. I messed up a little, I used the shine instead of the mate varnish.
The next 3 pictures are the ones I am selling. I made them out of Oak, 3/4 inch thick. They are identical (almost because the lines are not perfect, I used an industrial pen - precision marker).