GrabCAD

GrabCAD is a 3D file hosting platform for anyone interested in engineering or 3D modeling, not just 3D printing enthusiasts. It offers a wide range of files, from parts for building and modifying open-source 3D printers to complex designs for engines, cars, and appliances.

While many files are in formats like OBJ or other 3D CAD formats, which are often compatible with 3D printing, these models are typically created using professional software like Fusion 360, Solidworks, or Autodesk AutoCAD.