How to make your own waterproof cement 3-in-1

How to take the waterproof cement mould and make it into a 3-inch-tall, 3.5-inch wide, and 2.5 inches deep concrete 3-piece, waterproof cement mold.We put a little water into the mold, and then used our hands to apply a layer of sand, sanding, and sanding powder to seal it in.We added more water to get the 3-inches-tall shape.The waterproof cement […]

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