I discovered crokinole while visiting friends in NB. Got plans from Dr. Crokinole and started making boards. Shifted to round as it was more fun to make. Am a retired engineer.
The plans called for a 24" playing size which is the size I make, is that a disadvantage? Have made 20 so far and everyone is happy with them. Also make crokinole score boxes.
There has been a resurgence of competitive crokinole in Southern Ontario (also in the Okanagan Valley of BC, PEI and pockets of the U.S.) We have standardized the size of the active playing surface diameter at 24". This means that the diameter of the outer line on the board is 24". In order to achieve this, the diameter of the plywood playing surface must be at least 26". This is a very inconvenient size to cut out of a 4' x 8' piece of plywood so I believe most board builders are using 5' x 5' plywood. (Baltic Birch Plywood is one wood that comes in this size) The world championships and all tournaments sanctioned by the National Crokinole Association use this size board and I think it will become a standard around the World. - Fred Slater