Machinery TwinImporting CAD models
GLB, STEP/IGES and FBX import, formats, quality levels, and scale.
Select an object, open its Model section, and use the upload button. The importer detects the format from the file.
Supported formats
| Format | Notes |
|---|---|
| GLB / glTF | The native format, imported as-is, fastest. Anything can be converted to GLB by most CAD/DCC tools. |
| STEP / IGES | The mechanical-CAD standards. Converted in the browser (the converter loads on demand on first use). B-rep surfaces are tessellated at the chosen quality level. |
| FBX | Common DCC exchange format. |
Whatever the source format, the result is stored as an optimized GLB in your project's local storage and reused by ID, so importing one model and attaching it to five objects costs one copy.
Quality: Draft / Normal / Fine
STEP and IGES are exact surfaces that must be turned into triangles. The quality selector controls that tessellation and feeds the model simplifier:
- Draft, coarsest, lightest. Ideal for machine frames and anything watched from a distance.
- Normal, the default; good balance for most parts.
- Fine, for close-ups and presentation shots.
You can re-import the same file at a different quality later; nothing else about the object changes.
Scale
The scale selector maps the file's units to scene units at import (e.g. a millimetre-unit STEP file into a millimetre-unit scene = 1:1). Getting scale right at import is much cleaner than fixing it later with the object's scale, see Coordinates & units.
Model size limits
The maximum size of a single imported model depends on your plan (25 MB on the free tier). See Plans & limits.
Very heavy CAD
A full-machine STEP assembly with every bolt can produce millions of triangles. Import at Draft quality, or split the assembly and import per-part, the simplifier removes tiny fasteners, but 500 MB source files are best pre-split in your CAD tool.