Convert DWG to X_T

A Parasolid-based CAD system may require an .x_t file when a 3D model must be exchanged as editable solid geometry. Converting a DWG is useful for transferring that model between CAD systems, but a 2D drawing cannot become a complete 3D solid without reconstruction.

What DWG contains

.dwg is Autodesk’s native drawing format, used by AutoCAD and many architecture, engineering, construction, and manufacturing applications. It can contain 2D lines, arcs, polylines, dimensions, text, blocks, layers, and layouts, as well as 3D surfaces, meshes, and ACIS-based solid bodies.

The file extension alone does not identify the usable content. A floor plan, section, or collection of polylines can be converted only as drawing geometry; it cannot produce a valid 3D solid automatically. A DWG containing native 3D solids or surfaces is the appropriate source for this conversion.

What X_T contains

.x_t is the text-based Parasolid exchange format. It normally stores precise 3D boundary-representation geometry and topology, including solid and surface bodies, rather than the drafting presentation found in a DWG. Parasolid-compatible CAD systems can usually import the resulting bodies for further feature creation or editing, subject to their own healing and feature-recognition tools.

X_T is the readable text counterpart to Parasolid’s binary .x_b format. It is not a universal CAD format: the receiving application must support the relevant Parasolid version and entity types. Layers, dimensions, annotations, blocks, layouts, associative constraints, materials, and native parametric history generally do not survive as equivalent X_T data.

Desktop conversion

CAD Exchanger is a practical dedicated option because its desktop product supports DWG import and Parasolid export. TransMagic is another commercial CAD translator that supports DWG and Parasolid workflows. Confirm the current input and output format lists for the installed edition before purchasing; format support can differ between products and license tiers.

1. Open the DWG in the converter and inspect the model tree. Select the 3D solids or surfaces needed for export; hide construction geometry and unrelated layouts.
2. Check the source units and the model’s overall dimensions. DWG unit metadata can be missing or ambiguous, so do not rely on automatic detection for a manufacturing model.
3. Use File → Export or the equivalent export command and select Parasolid Text (*.x_t). Choose a Parasolid compatibility version if the converter provides that setting.
4. Set the export tolerance or healing option only as required by the receiving CAD system. Excessive tolerance can alter small features; an excessively tight tolerance can leave invalid edges or failed faces.
5. Open the exported file in the target CAD application and validate the body count, units, bounding dimensions, holes, fillets, face continuity, and volume. Re-export after healing or removing defective source faces when necessary.

AutoCAD is useful for inspecting or repairing the DWG, but it is not generally the direct choice for writing Parasolid X_T. AutoCAD commonly exchanges 3D ACIS geometry through SAT, while X_T export requires a translator or a CAD system with Parasolid output support.

Online conversion

A browser-based CAD translator such as CAD Exchanger Cloud can be used when the service’s current format list accepts the particular DWG and offers Parasolid X_T as an output. Upload the file, select the Parasolid text output, set units or conversion options if offered, download the result, and verify it in the destination CAD system.

Do not upload proprietary designs, personal data, or export-controlled geometry to an online service without checking its retention, processing, and deletion terms. General-purpose file converters may change only the container or support 2D DWG entities; use a CAD-specific service that explicitly lists both DWG input and X_T output.

Compatibility and quality limits

• A 2D DWG requires manual modeling in a CAD application before it can yield a 3D solid X_T file.
• Meshes, proxy objects, unsupported custom entities, external references, and some surface types may be ignored or converted imperfectly.
• Conversion transfers geometry, not the DWG’s parametric feature tree. A solid may arrive as a single imported body with no editable extrude, hole, fillet, or sketch history.
• Open shells, self-intersections, tiny gaps, duplicate faces, and zero-thickness regions can cause import failures or produce surfaces instead of solids.
• Parasolid kernel and file-version differences can affect interoperability. If the recipient reports an unsupported version, export an older compatible X_T version or use the recipient’s recommended translator.
• Keep the original DWG and compare the converted model against it; for production use, verify volume, units, critical dimensions, and manufacturability rather than relying on a successful export message.