Developer's DescriptionBy NCH SoftwareConvert files in STL, 3DP, 3MF, OBJ, and PLY formats.Spin 3D Free is an easy-to-use 3D file converter that can convert STL, 3DP, 3MF, OBJ and PLY 3D file formats. Convert 3D files within minutes of downloading. Fast and easy one-click file conversion process. Quickly convert multiple files with batch conversion for free.