STEP to STL Converter

Lower precision values produce finer mesh detail but larger files, ideal for curved or organic CAD surfaces. Higher values create coarser meshes suitable for simple mechanical parts. Start with the default setting and adjust based on your print requirements.

STEP files with multiple bodies or assemblies are supported. Each solid body is tessellated and merged into the output STL. For separate printable parts, consider converting individual components.

STEP AP203, AP214, and AP242 — the most widely used versions — are all supported, covering the vast majority of STEP files exported by CAD software. If you encounter an unsupported version, try re-exporting as AP214 from your CAD application.

No. Engineering annotations, tolerance information, and metadata in STEP files are lost during STL conversion. STL only retains geometry. We recommend recording important engineering parameters before converting.

You can reduce the face count by lowering the precision setting in the conversion options. Alternatively, use a mesh simplification tool after conversion to optimize the file size while maintaining visual quality.

Conversion time depends on STEP model complexity. Simple parts typically finish in seconds, while complex assemblies or high-precision surfaces may take from ten seconds up to a minute.