3d printing heat sinks

A method comprising:

• accessing print data that includes instructions for a delivery device to deliver liquid droplets onto a preselected area on a layer of build materials;
• determining distributions at which gaps are to be formed in the delivery of the liquid droplets within the preselected area based upon the print data, wherein the gaps are to form heat sinks in the build materials that are to result in thermal uniformity across the build materials in the preselected area;
• and
• controlling the delivery device to deliver the liquid droplets across the preselected area while forming the gaps at the determined distributions.

A non-transitory computer readable medium on which is stored machine readable instructions that when executed by a processor, cause the processor to:

• access print data for printing liquid droplets onto a preselected area on a layer of build materials;
• determine a distribution of gaps to be included in the printing of the liquid droplets onto the preselected area, wherein the gaps are to form heat sinks in the build materials that ensure thermal uniformity across the build materials in the preselected area;
• and
• modify the print data to include the determined distribution of gaps in the printing of the liquid droplets.