Now that my son had his big day last weekend, the wife has requested I build the wedding cake display for my daughter's wedding in May. Basically, building boxes with barn-board that will be stacked hold the cake/cupcakes/etc.

I've built a proto-type out of old fence pickets and have quite a bit of old barn board for the project. However, I need some additional barn board for the project. Any idea where to buy some, preferably in Centex? I need to be able to rip to ~6" width and need ~16 ft (i need to cut to 12--16" lengths)--the wood I currently has is 1/2"-3/4" thick.