So just what are precast concrete countertops? We start the process by making a pattern (template) of the area where the countertops are to be installed. We take this template to our shop and lay it out on a casting table. We incorporate the edge that you’re looking for into this mold (straight up and down / beveled / chipped stone / rounded / etc.), add reinforcement, and then pour the countertops. After letting them harden or “cure” for a short period of time – between two to seven days depending on the type of cement mix we use – we then break open the mold, sand, stain, or polish it depending on what you asked for then seal it, load it into the truck, and haul it to its destination for installation.