To start 3D printing or Laser Cutting, you'll need to create an account here. Once done, you'll be able to upload your files and get live quotes of yours parts
Already have an account? Log In
An OBJ file, or .obj file, is a very common type of 3D file. It is often used as an exchange format by many software programs as an alternative to STL files (.stl files) when information about colours or materials is desirable.
It is very frequently used and has become one of the primary exchange file formats between software.
The OBJ file formatuses ASCII format (plain text) with a simple syntax. The main sections of OBJ files contain vertex lines of type (type v), texture coordinates (type vp), normal coordinates (type vn) and faces (type f).
The OBJ file may be accompanied by a MTL (Material Library) file, which references the materials and colours used.
On sculpteo.com, for example, the MTL file and the OBJ file can be downloaded together into an archive file (ZIP file for example) to use the texture, colour and material information. It’s one of the best formats for printing multi-coloured material.
Often used as an alternative to STL files, OBJ files differ: