Abstract: This invention is related to a method and a moulding device (100) for making a cast of a surface. The moulding device comprises a first moulding chamber part (30), which is adapted to be placed adjacent the surface and to form a moulding chamber (16) together with the surface. Moulding material can be introduced into the moulding chamber via an inlet (9), and one or more outlets (20, 21) serves to drain the moulding chamber from any entrapped liquid or gas. Further, at least one test piece (17) with surface defects, having well-known characteristics is provided in the moulding device for making at least one imprint on said cast surface. Hereby, a quality test of said cast can be performed.