Inventor

Autodesk Inventor has no backward compatibility. Open an .ipt or .iam file from Inventor 2020 in Inventor 2025, save it, and that file will never open in 2020 again — not with any workaround, not with a trial license, not with a downgrade export. The migration is a one-way door. This matters because version upgrades in Inventor are not transparent events. Each new release updates the internal file format. When you open and save a file, Inventor rewrites it in the current format. If your team is spread across two Inventor versions — which happens whenever a seat upgrades before the rest of the organization — that saved file is now unreachable to anyone still on the old version. ...

Moving CAD data to cloud is not the same as moving documents to cloud. A SolidWorks assembly references its component parts by absolute path. A drawing references a model. A PDM revision history records who checked what out on which date. Generic cloud storage (SharePoint, OneDrive, Dropbox) treats every file as an independent entity and breaks all of this silently — the files land in the bucket, the directory looks right, and then the first engineer to open a top-level assembly watches it rebuild with hundreds of “file not found” dialogs. ...

Large assemblies break the assumption that CAD tools “just work.” At some threshold — different for each platform — the software stops being interactive and starts being a waiting exercise. The difference between a team that manages large assemblies well and one that doesn’t is almost entirely about the tools and workflows they choose to use, not about hardware. This guide covers the performance toolkit for SolidWorks, Inventor, and Fusion 360, with specific attention to where each platform’s approach breaks down and what you can do about it before the assembly grows too large to manage. ...

If your shop uses SolidWorks and your supplier’s shop uses Inventor, at some point you will end up comparing notes on batch DXF export. Both platforms flatten sheet metal and write DXF files. Both can be automated. The workflows look similar from a distance and differ substantially in the details that matter for production pipelines. This is a comparison of the actual automation approaches, not marketing specs. Platform capabilities are drawn from the COM API (SolidWorks) and the ObjectModel/iLogic API (Inventor). ...

You click “Fillet,” pick an edge, type a radius, and hit the green check. The edge rounds off. Done. Until it isn’t. Until you get “Fillet operation failed” on a perfectly reasonable-looking edge. Or until the same 2mm radius works on one edge but blows up on the adjacent one. Or until your model rebuilds fine in SolidWorks but the same STEP file fillets differently in Inventor. These aren’t random bugs. They’re the predictable result of three completely different geometric kernels making three completely different decisions about how to roll a ball along an edge. We decompiled the DLLs, read the exported symbols, and walked through the open-source code to see what’s actually happening. ...

You just built a SolidWorks add-in. Before it can run, you need to register it as a COM server with regasm.exe, write registry keys under HKEY_LOCAL_MACHINE, and make sure your class has [ComVisible(true)] and a [Guid] attribute. You need admin privileges. You’re locked to .NET Framework 4.x. And if the registration goes wrong, you get a cryptic swRegistrationError and nothing loads. Meanwhile, your colleague building an Inventor add-in drops a .addin XML file into a folder, points it at a .NET 8 assembly, and it just works. No regasm, no registry, no admin rights. ...

Choosing the right CAD software can make or break your engineering team’s productivity. With dozens of options available, three platforms consistently rise to the top: SolidWorks, Fusion 360, and Inventor. Each platform offers unique strengths, but they serve different needs. SolidWorks dominates traditional manufacturing, Fusion 360 appeals to startups and cloud-first teams, while Inventor integrates seamlessly with Autodesk’s ecosystem. This comparison covers features, pricing, learning curves, and real-world applications to help you match the platform to your workflow and budget. ...