Pore placement determinations using anchor points

A method comprising:

• determining, by a processor, locations of a digital model of a molded fiber screen to be fabricated by a three-dimensional (3D) fabrication system at which a plurality of anchor points are to be placed, wherein the anchor points comprise points that remain in place during a placement determination of pores on the digital model of the molded fiber screen, and wherein the anchor points correspond to locations at which pores are or are not to be formed in the digital model;
• placing, by the processor, the plurality of anchor points at the determined locations of the digital model;
• determining, by the processor, places on the digital model at which the pores are to be set in the digital model, wherein the pores are to be placed to comply with a predefined constraint with respect to the anchor points and to other pores;
• and
• modifying, by the processor, the digital model to place the pores at the determined places in the digital model to add pores at the anchor points that correspond to pores in the digital model.

An apparatus comprising:

• a processor:
• and
• a memory on which is stored machine-readable instructions that are to cause the processor to:
• place a plurality of anchor points at determined locations of a digital model of an item to be fabricated, wherein the anchor points comprise points that remain in place during a placement determination of pores in the digital model of the item, and wherein the anchor points correspond to locations at which pores are or are not to be formed in the digital model;
• determine places at which the pores are to be set in the digital model of the item, wherein the pores are to be set to comply with a predefined constraint with respect to each other and the anchor points;
• modify the digital model to place the pores at the determined places and to add pores at the anchor points that correspond to pores in the digital model;
• and
• cause a three-dimensional fabrication system to fabricate the item according to the modified digital model.