Hi thanks for the explanation!
So some more questions:
- I have 64GB RAM... How much would I need? Where can I see it?
- Why couldn't PhotoScan tell before? It's time consuming with try & error, especially when I start it over night and find out next morning that nothing happened.
(And it would be clearer to say "not enough memory" instead of "bad allocation"

- Which is the proper way with smaller volumes: Is it the "area"?
- Is there a way automatically to tear the object into pieces, because I will hardly be able to do it exactly without intersections.
Thanks again!