Before making the model, it is a good idea to plan what would make casting easier. One never wants to compromise on the artistry and beauty of the piece, but some simple tips may prevent frustration from repeatedly casting bad pieces.

  • Avoid sharp and acute angles which can break off when casting. Round ends of notches or tips.
  • Avoid alternating thick and thin cross sections which may result in porosity.
  • Design articles so they can cool evenly and distribute stress incurred by cooling. It may mean assembling a part to achieve this.
  • Avoid points, thin edges, and fine wires as these are difficult to fill without overheating the metal.
  • Avoid "x" type intersections, the point of intersection will tend to cause turbulence and/or have porosity.