Registering some 180 scans into a single model is a challenging project. I am using a combination of Autodesk Recap Pro and Leica Cyclone Register 360. I am rather pleased with the results so far. At this point most of my effort goes into learning how the software works and overcoming some corruption of scans. So, these first clouds are practice.
The black spots are gaps that are addressed in scans not yet registered and the tolerances are not yet where I want them. But I am confident in a rich end product.