In this blog post, we unfold the intriguing world of 3D modeling. We'll explain what a 3D model mesh is and look at the differences between quads and tris. All of this viewed in the context of two major 3D modeling tools, Blender3D and Fusion360. This guide is essential for anyone interested in learning 3D modeling and improving their skills.
November 7, 2025
A 3D modeling mesh is a collection of vertices, edges, and faces that define the shape of a 3D model. It acts as a visual skeleton that determines the final shape of the object. By manipulating these parts, we can create complex and detailed 3D models.

Quads and tris refer to the type of polygons used to form the mesh. Quads, as the name suggests, are polygons with four sides. Tris, on the other hand, are triangular polygons. The choice for quads or tris depends mainly on the requirements of the project and the tools you use.

Both Blender3D and Fusion360 are excellent 3D modeling tools. Blender3D tends to prefer quad bikes because of its comprehensive set of modeling tools and its ability to take advantage of loops and rings. Fusion360, on the other hand, is a parametric modeling program and can handle tris efficiently, making it ideal for designing complex, technical components.
In Blender 3D, “topology” refers to the structure of the mesh. The arrangement and structure of vertices, edges, and faces in a 3D model. Good topology is essential for creating models that warp correctly during animation and produce smooth and realistic rendering results.
More info about topology in Blender3D:
More info about converting tris mesh for editing in fusion360:
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