Bases are important elements in the game of baseball. Bases provide a framework and a meaningful objective. There are a few of ways to create an base. The ideal end product would be of regulation size, durable and cost effective. You can create a using standard materials found at a hardware store.
Buy the materials listed and get the wood squares cut to the 15x15x2 dimensions. Most major hardware stores do basic cuts such as squares for free.
Sand the edges on the top side of the base until they are rounded and smooth.
Align each of the four wooden stakes about 1 to 1 1/2 inches in from each corner, leaving room to later staple the base covering. Attach one stake at a time into each corner of the base, using the screws. Drill one screw through the top of the base down into the center of each stake. Just before tightening, spread wood glue around the top of the stake, the finish tightening to seal it to the base. This is done for reinforcement and stability. Allow the glue to dry before proceeding.
Cut the memory foam and tarp to 19-inch x 19-inch squares.
Lay the tarp face-down on a flat surface. Lay the foam on top of it. Lastly place the wooden base in the middle of the foam and tarp, stakes pointing up.
Pull the tarp and foam simultaneously over the bottom edge of the base. Hold tight with one hand, and staple the tarp and foam to the underside of the wood base with the other hand. Work along one side at a time, applying a generous amount of staples to secure the cover.