Engineering teams today work with a wide range of CAD systems, suppliers, and other stakeholders, and often run into many versions of the same issue. They receive data and either can’t open it, can't trust it’s the latest version, or can’t use the information in the way they need to.  

A CAD viewer, a CAD translator, and a 3D PDF are not interchangeable, even though they are all used for data sharing and visualization. Depending on who is accessing the data and for what purpose, each can reduce delays, enhance collaboration, and streamline engineering workflows 

This blog post breaks down which of a CAD Viewer, CAD translator, and 3D PDF is the right choice for you. We will break down the relative utility of each, how they provide real value across manufacturing organizations when each is. Finally, we demonstrate which of Tech Soft 3D’s ready-to-use SpinFire applications are the right options by use case. 

• CAD Tools Quick Reference Table 

• CAD Viewers 

• CAD Translation 

• 3D PDFs 

Understanding the CAD Data Visualization and Usage Problem

True CAD interoperability means seamless exchange of CAD data from a variety of sources without a loss in data integrity. 

Native CAD files can only be accessed if you have the original software; e.g., a CATIA V5 file doesn't open in Creo. Unfortunately, the engineering landscape is incredibly diverse in its needs and preferences, and no single master software or format has emerged as a universal standard.  

This creates a problem for efficient workflows that involve suppliers, stakeholders, different expertise levels, and much more: How can teams get accurate, reliable CAD data to the people who need it in a format they can actually use? 

This question comes up often in three broad scenarios across engineering organizations: 

• Someone needs to visualize and interrogate a model 

• Someone needs to use a model in their own software 

• Someone needs to receive a model but has no specialised software at all 

Each scenario has a very different set of needs, and organisations may use all three at different points in a product's lifecycle: internal review with a CAD viewer, translation when data moves to a supplier, and 3D PDF when a finished design package goes to a customer or other external teams. 

Which CAD Tool is Right For You?  

The table below provides a quick reference before we dive into each in detail. The decision usually boils down to three simple questions: who is the recipient, what do they need the data for, and how sensitive is the IP? 

CAD Viewers – Powerful Visualization at a Fraction of the Cost

A CAD viewer provides an easier way to collaborate with design data, allowing everyone to access CAD data. These tools allow users to open and interact with complex 3D CAD models from a wide range of sources, without needing to have the original CAD software. 

Licensing CAD software is notoriously expensive, and many people who need to work with a model don't need the full functionality a complex engineering application provides. Design reviewers, project managers, QA teams, procurement staff, and sales teams can all benefit from having access to up-to-date CAD data. CAD viewers allow non-engineers and other stakeholders access to your CAD data at a fraction of the cost and complexity of a full engineering application.  

CAD viewers allow you to measure geometry, add markups and annotations, and generate cross-sections and exploded views, offering more advanced analysis and collaboration throughout the product’s lifecycle.  

When to Use a CAD Viewer: 

A CAD viewer is the right tool when the primary need is to review and interrogate a design. This includes internal design reviews, cross-functional collaboration across teams using different CAD platforms, and sharing data with colleagues who need to analyse a model but aren't CAD users themselves.  

When is a CAD Viewer NOT the Right Tool: 

When the person receiving the data needs to open the model in their own CAD software, a CAD Viewer isn’t enough. That's where the need for accurate, fast CAD translation such as SpinFire Convert comes in. 

Is SpinFire Insight the Right CAD Viewer for You? 

CAD Translation – Preserving Data Integrity in Mixed CAD and PLM Environments

CAD translation is the process of converting a file from one format into another so it can be opened and worked with in a different software environment. This is particularly important when working with external partners and suppliers who work in a different CAD software, and require data be sent to them in their native format. Accuracy and data preservation is a key concern in CAD translation, and the more translation steps a file goes through, the greater the cumulative risk. 

When to Use a CAD Translator: 

Translation is the right approach when your model needs to move into a different CAD or PLM software. Along with being used to share data with teams using a different CAD system, translation can be useful when archiving designs in a neutral format like STEP to protect against future software changes. It’s also needed when moving into a different CAD environment if there are designs that need to be maintained. 

In the simplest terms possible: If your CAD data needs to move to a new system that does not accept its current format, you will need CAD data translation of some kind. 

When is a CAD Translator NOT the Right Tool: 

If the goal is to share a model for review or sign-off with someone who doesn't need the full capabilities of a CAD software (and likely doesn’t have access to it at all) translation is overkill. It can expose more data than necessary without any additional benefit. In this case, a CAD viewer or 3D PDF output would be a better alternative 

SpinFire Convert as a CAD Translation Option 

As mentioned, preserving data integrity is one of the most crucial considerations in data translation. SpinFire Convert reduces the risk of errors by using vendor APIs to ensure translation accuracy. 

3D PDF: When You Need to Reach Beyond Engineering

A 3D PDF embeds interactive 3D CAD geometry within a standard PDF document, viewable by anyone with a free copy of Adobe Acrobat Reader. It’s an easily sharable, intuitive format that is recognized by less technical users, making 3D PDFs great for providing anyone with access to designs.  

3D PDFs offer many tools for exploring designs. Users can rotate the model, create section views, take measurements, select and isolate components, and navigate the assembly structure. The interactive, 3D visualization experience provides a far better understanding of the design screenshots ever can. 

3D PDFs also allow other files to be attached and shared alongside the CAD data, e.g. PowerPoint files, 2D drawings, and spreadsheet data can all be included, allowing for the creation of Technical Data Packages.

When to Use 3D PDF: 

3D PDF is the right choice when you want to securely share design data with a wide range of people in a visually striking, intuitive way that facilitates collaboration. The format is free to view, meaning suppliers, clients, and other external partners can interact with the 3D PDF without any specialist software.  

Our guide to 3D PDF goes into detail about what 3D PDFs are, how they can be used, and the benefits they can bring.  

When is 3D PDF NOT the Right Tool? 

When the recipient needs data in their own software, a 3D PDF won't serve them. The format is built for broad reaching collaboration, often with non-technical users. 

SpinFire Convert for 3D PDFs 

Teams can also build branded, predefined templates tailored to specific workflows or document types ensuring that every published PDF contains the right information in the right format. With SpinFire Convert, data can be published to multiple templates simultaneously, allowing you to provide only the relevant information to every recipient. 

SpinFire Convert enables 3D PDF publishing directly from within your CAD application, allowing for easy creation. Alternatively, for one-off use, the drag-and-drop interface makes casual conversion straightforward. For teams producing documentation at scale, volume publishing handles large quantities of data without manual intervention. 

Getting the Right Data to the Right People 

Choosing between a CAD viewer, a CAD translator, and a 3D PDF is really a question of who needs access to data and why.  

• If the goal is to give people across your organisation visibility into design, a CAD viewer is the answer.  

• If you need to be able to access designs in another CAD system or PLM, environment translation is what's needed.  

• If you’re trying to share an interactive model or technical data package with people who have no specialist software 3D, PDF is the right format.  

The SpinFire product family covers all three scenarios within a coherent set of tools: SpinFire Insight for broad visibility and access across the organisation, and SpinFire Convert for accurate translation and 3D PDF publishing for sharing designs with anyone, even non-technical users or external partners.