Spin 3D converts between STL, 3DP, 3MF, OBJ and PLY mesh file formats. No matter which program you use to create your 3D models and 3D designs, you can convert them to your desired output format. Preview original 3D files and the output results prior to converting your file. Ensure that you are working with the right file and that the output is accurate. Spin 3D features multi-threaded batch processing. Whether you are converting one file or many, the conversion will take place efficiently using the best technology.