eSHARE has learned from its manufacturing customers how valuable and how risky it is to share CAD drawings with partners and suppliers. The default method of sharing is to give the 3D model away permanently. There is no revocation, no visibility into what happens next. Given the nature of these drawings, that data is at a minimum highly valuable intellectual property and in many cases highly regulated technical information subject to strict export controls. eSHARE kept coming back to the same thought: there must be a better way…
Manufacturing engineering teams run bid cycles across hundreds of external suppliers. The 3D model is the artifact that makes accurate quoting, design-for-manufacturability review, and CAM programming possible. Without it, suppliers are working from flat 2D drawings and making expensive assumptions. With it, they can calculate material volume automatically, flag sharp internal corners before tooling is cut, and program machines directly from the geometry. The 3D model is not supplementary to modern manufacturing supply chains, it is the thing the supply chain runs on.
The problem is what happens when you share it.
The control gap in 3D collaboration
The current answer for most organizations to securely share 3D models is a bespoke data-management system built specifically to handle 3D model exchange with the supply chain. A separate portal. A separate identity surface. A separate audit trail. A separate IT footprint to maintain.
Engineering builds it because the alternative is zipping files and emailing them, which means the file is given away permanently the moment the supplier downloads it. This means that there is no revocation so after the bid closes the IP does not come back. Non-winning suppliers permanently retain the 3D model.
The governance stack most organizations have today was not built for this; the pace at which manufacturing supply chains are digitizing means the workarounds are getting harder to sustain.
What governance for 3D looks like
The same principles that govern documents should govern 3D models. The file should never leave the originating organization’s M365 tenant and external access should be revocable. Every share, view, and interaction should generate a tamper-evident record. Policy should re-evaluate every access request, not just at the moment of initial sharing. Furthermore, none of this should require the engineer to consult a checklist or route a request through a portal.
That is the design principle behind the eSHARE 3D CAD Viewer. It extends the Trusted Collaboration Fabric to 3D CAD models: the same containment, the same attribute-based access control, the same audit trail, the same revocation capability, now reaching the file type that carries the most sensitive IP in manufacturing supply chains.
The model is authored in a CAD system that exports a JT file that lands in SharePoint or OneDrive inside the M365 tenant. The engineer shares it through eSHARE Collaborate, which governs the share the same way it governs every other external collaboration surface. The supplier accesses it through an authenticated, time-limited link. The viewer launches inside the eSHARE M365 Trusted Sharing app or the Collaborate web portal. The supplier can pan, zoom, rotate, inspect PMI and tolerances, explode the assembly, take measurements, and annotate the model. The file never moves and there is no need to download it. When the bid closes, access is revoked across every supplier simultaneously.
Why this matters now more than ever
Compliance in manufacturing is not just about what humans can access. It is increasingly about what systems can ingest. The same model that contains ITAR-controlled technical data can end up in an AI training corpus if the governance layer cannot express what the file is and what the rules around it are. The same model that was shared for a single bid cycle can persist in a supplier’s environment indefinitely if there is no revocation mechanism.
The audit trail the 3D CAD Viewer generates is not just compliance evidence for today. Every share event, every interaction, every access decision is a structured signal. For compliance teams assembling evidence at audit time, it means the record exists already. For security teams trying to understand what happened to a model after it was shared, it means the question has an answer. For AI systems that need to reason about access and eligibility, it means the context is present in the record, not inferred after the fact.
That is the direction the Trusted Collaboration Fabric is moving. Classification told systems what a document was. Data Attributes gave those systems the context they needed to act appropriately. The 3D CAD Viewer brings the same governed surface to the file type most manufacturing organizations have been sharing without any governance framework at all.
The 3D model in the middle of every bid cycle deserves the same control as every other piece of sensitive content in the enterprise. That is what we built the 3D CAD Viewer for.
Want to see it live? Contact us for a demo, or download the solution brief for more information.
