I use Open Nest to typeset my curves, but why are they arranged so sparsely? How can I adjust them to make full use of the typesetting space? And I want to arrange these four rings together, but I don’t know why, it just doesn’t work. I think those cases can be operated like this
in simple words, the number of rotations is the division of the full 360 degrees angle in which each piece can be placed: if you use value 3 like in your picture, then each piece will be tried “as it is”, or rotated 120 degrees, or rotated 240 degrees, nothing more nothing less
if you are looking for a wider range of rotations, you can just insert (for instance) 36: that way you will get 36 possible increments of 10 degrees each one (this increase of possibilities will of course reflect on the calculation time)