← CAD and mesh conversion guides

OCCT conversion workflows

STL to STEP XML

Convert STL to STEP XML mesh data. Write STPX, STPA, STPZ or STPZX with explicit scale and application-supplied model identity.

Build this conversion into your application with OCCT readers, writers and the commercial components identified below.

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Input interface
OCCT STL reader
Processing route
Mesh to CAD container
Output interface
OCCT3D STEP XML writer

Exchange STL meshes through STEP XML

The STEP XML component supports mesh writing as well as BRep workflows. Pair it with the STL reader to deliver polygonal geometry in STPX, STPA, STPZ or STPZX, using the extension accepted by the receiving system.

This is mesh interchange through a CAD exchange representation. It is useful when a product-data pipeline accepts STEP XML but the available source geometry is already tessellated.

Supply known document information

Read the STL and establish its intended coordinate scale. The application can create an item with a meaningful name and known document context before writing. Such information is authored from application records, not recovered from a missing STL assembly model.

STEP XML can carry assemblies, names, colors and STEP attributes. A geometry-only source does not automatically populate those fields. Decide which additional properties are required and where the integration obtains them.

Check mesh support in the receiving system

A recipient may accept STEP XML while supporting only some representations. Confirm that it consumes the mesh data used by this route and reopen a representative result. Compare item visibility, placement, bounds and triangle coverage.

Writing a mesh into STEP XML does not recover original analytic surfaces or feature history. Surface from Scattered Points belongs to a separate reconstruction project when fitted CAD geometry is actually required. For a native STEP destination, compare STL to STEP; for triangle output in the opposite direction, see STEP XML to STL.

Conversion integration

Build a STL to STEP XML workflow

Share the source and receiving applications, representative files, required attributes and throughput. We can scope SDK evaluation or an integrated conversion service.