Extract text from 3DMK files
To convert your 3DMK file to another format, you need Autodesk 123D Make or other 3D software.
To convert other file formats to the "Slicing Project File" file type, you need software like Autodesk 123D Make or a similar tool.
3DMK files are proprietary project files created by the now-discontinued Autodesk 123D Make. This software was widely used by makers and hobbyists to slice 3D models into flat, physical patterns (like cardboard or plywood layers) for laser cutting or CNC machining. A .3dmk file saves the imported 3D geometry alongside the specific slicing parameters, material settings, and layout configurations used to generate these physical assembly plans.
The primary problem for users holding these files is that Autodesk retired the entire 123D suite, creating a classic "abandonware" scenario. You cannot easily download the software to open the file, leaving your project data locked inside an inaccessible format. Furthermore, .3dmk files are not standard 3D meshes like STL or OBJ; they are complex project containers. To make this data usable again, you typically need to convert the cutting plans into standard vector formats. For laser cutting or CNC work, converting to DXF, EPS, or PDF is essential. If you are trying to recover the original 3D shape hidden inside the project, you may need to look for export options to STL.
Convert.Guru analyzes your 3DMK file, detects the exact format, and lets you read the text inside.
Users also converted DMK, STL, 3DM, APKG, RVT, IPJ and NWD files.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our 3DMK converter.