If it's for the kitchen, it should be solid surface.  With these solid surface kitchen sink molds, you can offer your customer not only the countertop but a solid surface sink as well.  There are single, double, and triple bowl kitchen sink molds available.  Some of the kitchen sink molds are designed to be used as a ‘drop-in’ and others are designed to be fabricated as an integral bowl. Even if you don't make densified solid surface material in the beginning, you may want to consider producing solid surface kitchen sinks for your local solid surface fabricators.  Check out this market.  Talk to some solid surface fabricators and see for yourself how lucrative the solid surface kitchen sink market can be for you.