Nesting procedures and management of 3D printing

A system for nesting 3D printing, comprising:

• at least one processor;
• and
• at least one memory configured to store one or more code sets, which cause the at least one processor:
• receive printing requests comprising a plurality of part models, each part model describing a part that is to be printed by a 3D printer of the system, and split the plurality of received part models into a plurality of model batches of the part models,
• define at least one 3D printing space with respect to at least one 3D printer associated therewith, and
• receive the plurality of model batches from the parts management module, set a first batch of the plurality of part models into the at least one 3D printing space defined by the printer management module, and repeatedly, set each consecutive model batch of the plurality of model batches into a specified occupied space that is defined by the specified 3D printing space and previously set model batches of the plurality of model batches, by:
• defining, for each part model in the each consecutive model batch, a roadmap with respect to the occupied space and a set of positioning rules, and independently from the other part models in that consecutive model batch, the roadmap describing availability of a location and orientation for that part model within the specified occupied space, and
• optimizing, in parallel for the part models in that model batch, a part positioning scheme for those part models for 3D printing of those part models by the 3D printer in the 3D printing space, wherein the parallel optimizing is carried out by applying PRM (probabilistic roadmap) to generate in parallel a plurality of probabilistic roadmaps representing a plurality of respective part models in the specified 3D printing space, and applying RRT (rapidly-exploring random trees) algorithms to explore configurations of the plurality of part models in the associated plurality of probabilistic roadmaps.