I have heard and read of a method of creating your own customized concrete counter top by making a form and pouring it. Then, after vibrating the air pockets out with an orbital sander on the sides of the form, and letting it cure, flipping it into place. I sounds like an inexpensive way to give my kitchen a durable colored counter top. I am just wondering if it would crack when flipped, even with the reinforcing wire, around voids left for sinks? Anyone respond?