i've borrowed them because i don't have any, but i intend to. it's my understanding that they're generic. just make sure that you don't get one that's bigger than your work area. if you can only make a 12" block, for instance, be careful not to get a board for a 15" space. also, the rule of thumb is to get 2, so you can move one ahead of your work at all times. i want baptist fan for mother's day and birthday. one each.