We are remodeling our bathroom, and we would like a shower where the walls are solid surface, and the corner has no seam. Ideally the corner where the two surfaces come together are curved with no seam. Is this possible? I'm thinking that this can be done with a material like Corian. Is this true? If this is possible, can someone suggest a source or company in the San Francisco area? We are in San Francisco. Thanks in advance... :)

--Warren