Techniques for manufacturing and cooling three-dimensional objects

A method of manufacturing three-dimensional (3D) objects, the method comprising:

• generating a plan for printing a plurality of 3D objects in a 3D printing medium, prior to printing any of the plurality of 3D objects, at least in part by:
• identifying at least one unprinted area of the 3D printing medium for insertion of at least one cooling device;
• and
• determining where at least some of the plurality of 3D objects are to be printed in the 3D printing medium such that none of the at least some of the plurality of 3D objects, when printed, intersect the identified at least one unprinted area for the insertion of the at least one cooling device;
• printing, using a 3D printer, the at least some of the plurality of 3D objects in accordance with the plan;
• after the printing,
• inserting the at least one cooling device into the at least one unprinted area of the 3D printing medium;
• and
• cooling the 3D printing medium using the at least one cooling device.