If I haven’t already built the model at the final intended size, or if I need a smaller or larger version of the model, the first thing I usually do is scale the virtual sculpt to the final size it would be in the physical world (for example, 4″ wide x 4″ high x 5″ deep). Wall thickness is one of the main criteria for a 3D model to exist in the real world. In my last posting, the model I built was a surface model and therefore had no wall thickness. Giving your Maya 3D model a wall thickness

Instead, I’m going to focus on my workflow in turning my models into watertight virtual objects. They also have some great information regarding file format, wall thickness and other surface issues to ensure your model is optimized and watertight. You can read their entry regarding polygon resolution and file size here. In light of that, I’m not going to cover those details in this post. I.materialise has some great information on their blog.