What is the OBJ format?
OBJ (Wavefront Object) is a 3D format with texture and color support. Compared to STL it contains UV mapping, materials (MTL). For color 3D printing.
OBJ vs. STL
- STL: just triangle geometry
- OBJ: geometry + textures + colors + materials
- 3MF: modern, compressed, multiple objects
When to use
Primarily for rendering and 3D graphics. For 3D printing OBJ is less common.
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