Hans Westerweel bases his ceramics on the traditional bowl and vase forms. The stoneware ceramics are firstly hand formed on a potter's wheel, after which a slow drying process follows until the clay is leather hard. The final form arises when the excess clay is trimmed from the dried ware on the potter's wheel. As a result of this process ceramics are created that are characterized by sharp outlines. Through this, the shape is brought back to the essence of the bowl and vase forms. Sometimes a utility function can be assigned to these forms.

With the raku ceramic objects, only the basic form reminds one of its original function. Because of the character of the raku ceramics, these objects have lost their utility function completely.
In the raku ceramics, Hans Westerweel combines the carefully designed form of an object with the unique effects of the applied raku technique. The outline is determined, the color gradients and the craquele pattern in the glazing occur during the firing and cooling process: each piece being " one of a kind ". This contrast can be found in each raku object of Hans Westerweel.

Hans Westerweel taught Ceramic Design (Keramische Vormgeving) at the Arts Centre (Centrum voor de Kunsten) in Bergen op Zoom from 1992 until 2008.

Ceramics and raku ceramics of Hans Westerweel can be found in collections in the Netherlands, Belgium, England, Switzerland, France and in the United States of America.