Here's a quick look at the beginnings of our Del Mar pipe. Tools of the trade The first step of a new product is creating the prototype. For the Del Mar we started with a found shell. To prepare for the mold making process we painted the shell's exterior and sculpted a bowl. The inside of a plaster Del Mar mold Casting: Liquid clay is poured into the mold to create a replica of the original piece. After castings are removed from molds they are trimmed and shaped into their final form. Once dry they will be bisque fired and move on to the glazing stage.