In a previous incarnation, the Zortrax library of free STL files was integrated into their Z-Suite software, so it was only available to owners of Zortrax 3D printers. The company has now split the library from the software and made it openly available online. That means anyone can browse and download free STL files, and fabricate them on any FDM machine. It’s a canny move, too. Most of the 830 3D printer models are optimized for ABS filament; makers who wouldn’t ordinarily use the material might be tempted to give it a try.