Models saved in the 3D NURBS CAD format (.3dm) can be probably exported and converted to other 3D model data files, including ISO STEP product data files (.stp, .step). Good option for this are some of the dedicated 3D model / CAD conversion and translation software or even some modeling programs with broad file support.
Home > Search converters: 3dm to step
Conversion of 3dm file format to step file format beta
Search for 3dm to step converter or software able to handle these file types.
Found 2 different conversion types using the same filename extensions.
Conversion 3dm to step type 1:
Convert from 3D NURBS CAD data file to ISO-10303 STEP product data file.
Microsoft Windows software 
- convert 3dm to step on Windows
3D Object Converter
3D viewer and converter with huge file type support
File extension | File type (from-> to) | Convert | Open | Save | Edit | Create | Import | Export | Extract |
|---|---|---|---|---|---|---|---|---|---|
Convert from 3dm file | 3D NURBS CAD data file | No | No | No | No | No | Yes | No | No |
to step file | ISO-10303 STEP product data file | No | No | No | No | No | Yes | Yes | No |
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned 3dm to step. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
CrossManager
A CAD converter with huge format support
TurboCAD
A family of 2D/3D CAD software products for Windows
Autoconverter
A converter for 3D formats
Apple macOS / Mac OS X software 
- convert 3dm to step on OS X
TurboCAD for Mac
A 2D/3D CAD software for OS X
Multiplatform software 
- convert 3dm to step on any platform
Autodesk Fusion 360
3D CAD/CAM tool for product development
Additional links: Open 3dm file, Open step file
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Conversion 3dm to step type 2:
Convert from 3DML model to ISO-10303 STEP product data file.
Multiplatform software - convert 3dm to step on any platform
Autodesk Fusion 360
3D CAD/CAM tool for product development
Additional links: Open 3dm file, Open step file
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