It is necessary to triangulate your mesh for use in Blaze 3D Studio. This process also helps to identify errors in the model as it shows how the surfaces of the model are constructed.

If you have not triangulated the mesh yourself then the importer will automatically do this for you. However, you should note that this process does not necessarily produce as good results as when you manually triangulate the 3D model during development. To ensure light passes smoothly over a surface, the triangles should flow in a uniform pattern.  To demonstrate this effect, see the images below:

The cylinder on the right, using manually corrected triangulation, will achieve the best look in Blaze 3D Studio as the lighting will pass over the surface much more accurately.

To further illustrate this concept, the below image shows a comparison between automatic triangulation and manually corrected triangulation and how these different triangulated models look in Blaze.

It is clear that manually corrected triangulation produces the best result.