Every major SolidWorks release changes something under the hood that nobody asked for. The 2025 release is no exception, and this time it’s the flat pattern engine that got reworked. If you’ve upgraded recently and noticed that your DXF exports look different, your corner reliefs have mysterious tear lines, or your flatten sub-features are behaving strangely — you’re not imagining things. These are real changes in how SolidWorks 2025 handles sheet metal internally, and they affect anyone who relies on consistent DXF output for fabrication. ...

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. ...

The flat pattern comes out wrong. The folded part measures correctly. The DXF dimensions are off by a few millimeters — or sometimes more. Your press brake operator is asking questions you can’t easily answer. This is a K-factor problem, and it’s common enough that manufacturing shops build their own macros to detect it. Understanding why it happens, and how to set SolidWorks up to avoid it, is worth the time for any team doing regular sheet metal work. ...

Every fabrication shop has a corner full of welding jigs. Custom fixtures built for a single assembly, used for a single production run, and then stored indefinitely because throwing away tooling feels wrong even when you know you’ll never use it again. SolidWorks’ Tab and Slot feature offers a fundamentally different approach: design the parts so they locate themselves. Instead of external fixtures holding components in alignment during welding, interlocking geometry cut directly into the sheet metal parts does the positioning for you. ...

There’s a recurring post format in the SolidWorks community that breaks CAD automation into levels: macros, parametric design, API integration, configurators. The comments are always the same — experienced engineers arguing about which level their team is actually at, and why Level 3 is the sweet spot that most teams never reach. They’re right. And understanding why most teams plateau matters if you’re trying to decide where to invest automation effort. ...

Engineers tend to think about DXF quality in terms of geometry accuracy. Does the flat pattern dimension match the folded part? Are the holes in the right positions? Is the file exported at the correct scale? These things matter. But they’re the minimum requirement. Fabricators — particularly laser cutting shops and press brake operators — need significantly more from a DXF file to actually process a part without back-and-forth. The geometry tells them what to cut. Everything else tells them how to do the job. ...

You run a GeoJSON-to-Shapefile conversion. The tool says it succeeded. You load the Shapefile into ArcGIS or QGIS and everything looks fine at first glance. Three weeks later, someone discovers that half the attribute data is wrong or missing. This is not hypothetical. It happens constantly in GIS workflows, and the reason is that GeoJSON and Shapefile are fundamentally different formats with incompatible assumptions about how data should be stored. Most conversion tools handle the geometry correctly but silently destroy the attributes. ...

Converting dozens of DWG files to PDF one at a time wastes hours you don’t have. Whether you’re delivering drawings to clients, creating documentation packages, or archiving completed projects, bulk conversion saves time and eliminates repetitive work. This guide covers manual methods and automated solutions for converting DWG files to PDF at scale. You’ll learn when each approach makes sense and how to choose the right workflow for your needs. ...

You click “Insert View” in FreeCAD’s TechDraw workbench, point it at a 3D part, and a few seconds later a clean 2D projection appears on the drawing page. Hidden lines are dashed, silhouettes follow curved surfaces, and section views show cross-hatched cut faces. It looks like the same thing SolidWorks does. And at a high level, it is — both systems solve the same fundamental problem: project a 3D solid onto a 2D plane, figure out which edges are visible, and draw the result. ...

Every SolidWorks user has opened a .SLDDRW file thousands of times. You place views, add dimensions, print to PDF, send it to the shop. But what’s actually inside that file? Is it vector graphics — maybe SVG behind the scenes? Is it a database of coordinates? How does a drawing “know” what the 3D model looks like from the front? We decompiled the SolidWorks interop DLLs, inspected exported symbols from native C++ libraries, and dug through the API documentation to answer these questions. Here’s what we found. ...