“Extra Large” CAD Models – What It Means for SolidWorks, CATIA, and Siemens NX

Dealing with crashes, delays, and lag from a massive CAD model can really derail your progress. The good news is that there are some ways to help reduce model sizes, deal with the slowdowns, and avoid them altogether.

Our CAD experts at CAD/CAM Services have been using CAD programs for decades, and we know how to work with “extra large” CAD models without missing deadlines.

When Does a CAD Model Become “Extra Large”?

A CAD model becomes “extra large” at different points, based on the CAD program and what type of models you’re dealing with. It’s normal for 3D CAD files to be a few MB large, but they can become multiple GB as components get more complicated and assemblies gain more parts.

The Common Symptoms of “Too Large”

Your computer will struggle to open and manipulate CAD files that are too large, and you’ll routinely encounter lag, slow-downs, and crashes. A model that’s too large will also slow down functions like running finite element analysis (FEA) simulations, adding constraints, and creating manufacturing drawings.

Hardware and Network Considerations

Your computer’s RAM, CPU, GPU, and hard-drive write/read speed will directly impact how big of a file you can handle. If you outsource SolidWorks CAD work, then you’re relying on your chosen company’s hardware power. At CAD/CAM Services, we built incredibly powerful computers that have the specs to handle your biggest files.

SolidWorks: Handling Large Assemblies with Lightweight Modes

In SolidWorks specifically, they offer “Large Assembly” and “Lightweight Component” modes which both help shrink down file size. These assemblies will simplify parts and simplify how parts are visually represented.

CATIA: Optimized for Complex Product Structures

CATIA has features that run in the background to free up space. Things like cache management and data streaming are designed to shrink file sizes as much as possible. This is why so many major companies use CATIA for their large and complicated assemblies.

Siemens NX: Advanced Techniques for Enterprise-Scale Assemblies

Siemens NX has features that work like a combination of CATIA and SolidWorks offerings. NX also connects with PLM environments like Teamcenter to offload processing power required to open, store, adjust, and share files.

Best Practices for Managing Extra Large Models

One way to handle really large models is to employ some form of PDM or PLM system, like Teamcenter, Windchill, or SolidWorks PDM. Another option is to utilize sub-assemblies. Finally, consider simplifying each model by opting for fewer features in the Feature Tree.

Conclusion

Dealing with massive files can lead to a lot of slowdowns, crashes, errors, and headaches. You can use some of our tips to reduce the size of your files, or you can outsource the work to our pros at CAD/CAM Services. We have incredibly strong computers that can open bigger files and streamline your operation. With access to every major CAD program, you can trust our experts for any of your 2D or 3D CAD needs. Get a free quote today.

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