Use the "Pre-alignment" function (usually the compass icon). The software will automatically try to roughly align the mesh to the CAD using a surface-matching algorithm. For symmetrical parts, you may need to place three "Local Coordinate Systems" manually.
Because processing massive 3D point clouds requires serious computer power, GOM Inspect 2019 requires robust hardware to run smoothly. Minimum Requirement Recommended Specification Windows 10 (64-bit) Windows 10 (64-bit) Processor (CPU) Intel Core i5 or equivalent Intel Core i7 / i9 (Multi-core) RAM 32 GB or higher Graphics Card OpenGL compatible Dedicated NVIDIA Quadro or GTX 🚀 How to Get Started with the Software Gom Inspect 2019
Go to File > Import > CAD and load your nominal part (STEP file). Then, File > Import > Mesh and load your scan data (STL). Use the "Pre-alignment" function (usually the compass icon)