Heat-aware toolpath reordering for 3D printing of physical parts

A system comprising:

• an access engine configured to:
• access an original layer toolpath for slice of a 3D CAD object, wherein the 3D CAD object represents a physical part, wherein the slice represents a physical layer for 3D printing of the physical part, and wherein the original layer toolpath controls the 3D printing of the physical layer and comprises a 3D print order for multiple toolpath segments of the original layer toolpath;
• and
• access a heat criticality measure for the original layer toolpath, wherein the heat criticality measure specifies a heat impact for different points on the multiple toolpath segments of the original layer toolpath for the 3D printing of the physical part using the original layer toolpath;
• and
• a toolpath reordering engine configured to:
• reorder the multiple toolpath segments into a modified layer toolpath, wherein the modified layer toolpath has a different 3D print order from the original layer toolpath and a heat criticality measure with a lesser heat impact on the physical part than the heat criticality measure for the original layer toolpath;
• and
• provide the modified layer toolpath to support the 3D printing of the physical part.

A non-transitory machine-readable medium comprising instructions that, when executed by a processor, cause a computing system to:

• access an original layer toolpath for slice of a 3D CAD object, wherein the 3D CAD object represents a physical part, wherein the slice represents a physical layer for 3D printing of the physical part, and wherein the original layer toolpath controls the 3D printing of the physical layer and comprises a 3D print order for multiple toolpath segments for the original layer toolpath;
• access a heat criticality measure for the original layer toolpath, wherein the heat criticality measure for the original layer toolpath specifies a heat impact for different points on the multiple toolpath segments of the original layer toolpath for the 3D printing of the physical part using the 3D print order of original layer toolpath;
• reorder the multiple toolpath segments into a modified layer toolpath, wherein the modified layer toolpath has a different 3D print order from the original layer toolpath and has a heat criticality measure with a lesser heat impact on the physical part than the heat criticality measure for the original layer toolpath;
• and
• provide the modified layer toolpath to support the 3D printing of the physical part.