Great idea, a year or so ago. Now the plywood alone would cost almost as much, if not more than that size pool would from Walmart lol However, if you go on Facebook marketplace and look up swimming pools, there is nearly always someone giving one away with metal walls that the liner is trash. If you get that and use the roll of metal to line the inside of the pallets, it would still be incredibly cheap. Great video, thanks for sharing.
Actually. You could always cut corner pieces out of wood. You would need 20 pieces for top and bottom of each connecting runner board on the pallets. Runner board is the horizontal 2x4 inside pallet. Cut the proper angle out of a 2x6 to put inside pallet and screw the pallets together.