Reusable fiberglass sink molds for molding integral concrete sinks in concrete countertops Multiple styles, including the "Tsunami" wave sink, the ramp sink, staircase, and traditional and rustic ...

Expressions LTD introduces a one-part mold for creating a 1 1/2-in.-thick shallow concrete vessel sink. It's made of reusable fiberglass and allows users to quickly mass produce concrete sinks.

Fiberglass forms were chosen instead ... The inside walls of the molds are coated with a gel that gives the finished concrete columns a smooth finish that needs no further work.