Modelling in 3D without having previous knowledge as a goldsmith would be like proceeding blindly with the modelling. The restriction of what can not be done or which could be highly expensive is defined by the following processes: casting, hand grinding and burnishing.

3D modelling and printing by means of software complement the traditional goldsmith techniques but do not substitute them. The models printed in plastic or resin, are then melted in metal and are finally ground and burnished mechanically or by hand.

The currently available CAD enables us to design any shape: accurate symmetries, intricate geometries, irregular and natural shapes. A 3D modeller who has no knowledge about the craftsmanship and therefore ignores the limitations imposed by casting, grinding and burnishing technologies, may face the risk of creating prototypes which, even though showing a mirror-polish in the screen virtual mock-ups, as physical objects they will present: laminar textures due to 3D printing, granulated textures due to casting, scratches due to grinding and waves from burnishing.

Surprising designs can be seen on the internet, but unfortunately, it is not feasible to produce them in metal. Whether it is due to excessive impurity or purity, not everything is acceptable in the case of gold and silver.