JT Import-Export

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Make large assemblies easier to share and review

Design data often needs to reach people working outside a CAD authoring tool. JT Import-Export helps your application read and write models with assembly trees, meshes, names, colors, and transparency.

Build review tools, prepare supplier data, or add JT delivery to a conversion service.

How it works

Read a JT file and choose the available mesh or precise geometry needed for your task. Keep object placements and part information with it as users inspect or process the model. For export, prepare mesh detail and required attributes, choose a supported JT version, and write the result.

Keep large assemblies easy to navigate

Let users select a component, inspect its position in the assembly, and change which parts are visible. Assembly structure helps keep related components together during review.

Keep part names, placements, and visual properties available for selection and review. Include PMI annotations and associated data when users need to inspect manufacturing requirements.

Connect precise geometry where available

JT files can carry meshes, precise geometry, or both. Reading embedded Parasolid BRep uses the Parasolid interface. Include that interface when your workflow needs precise geometry from a suitable JT source.

This supports JT to STEP and later CAD processing. A mesh-only source follows a mesh-based conversion path.

Share JT models for engineering review

The ISO 14306 series provides a reference for JT-based 3D visualization and product information exchange. A delivery also needs an agreed JT file version, geometry type, and required part information. Match those requirements with the selected reader and writer when planning an integration.

For manufacturing review, agree on required PMI presentations and associated data alongside geometry and part identity.

Show assembly detail as users explore

Levels of detail let an application use a lighter mesh for navigation and a finer mesh for close review. Loading selected content on demand can reduce how much data is prepared before users begin working. Parallel part processing can use several CPU cores for suitable assemblies.

Part names and placements remain important as detail changes. Users should be able to select a component in a broad assembly view and keep that selection meaningful when opening a more detailed view.

Bring supplier review into an assembly context

A procurement or manufacturing team may need to review one supplier’s component inside a much larger product. Sending an isolated part can hide fit and access questions. Sending a full authoring dataset can make review harder to prepare and navigate.

A JT-based application can use assembly structure and placements to keep the component in context. Available levels of detail and on-demand loading let users explore relevant regions. Names, colors, and supported PMI help connect what they see with the engineering questions under review.

Your application can link selected components with supplier records or review tasks and retain the source revision with each finding. Teams can review geometry and manufacturing requirements together, while their business system manages responsibilities and approvals.

Add JT to your exchange service

Use STEP to JT to prepare models for JT-based review. For other delivery needs, explore JT to glTF, USD, or STL.

Plan your JT integration around source representations, output versions, and model sizes. For standalone desktop viewing, CAD Assistant provides JT review with export and conversion of JT imports disabled.