This specific 3D model, "decorative pattern ready for 3D printing 3D print model 8", is an asset made available by "Unknown author".
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STL (Stereolithography, filesize: 24.1 MB), OBJ (OBJ, filesize: 40.6 MB), MAX (Autodesk 3ds Max, filesize: 39.9 MB), FBX (Autodesk FBX, filesize: 12.9 MB)