The term of Infill percentage is usually typical of FDM(FFF) three-dimensional printing. How to choose the infill type and percentage and what they can influence in further usage. How to make the 3D printing cost cheaper without damage to the model.

The density of your model’s internal space is called infill in 3D printing. The ratio of infilled space to your model’s internal volume is called infill percentage in 3D printing. The infill in 3D printing can be carried out with the following types:

Infill percentage has an impact on strength when increasing this parameter, lightness – when decreasing it. As a rule, three-dimensional printing is estimated based on the material consumed for printing inclusive of support, that’s why the cost of your part depends on infill percentage. Moreover, it was experimentally proved that printing with over 50% infill percentage makes no sense. A part doesn’t become stronger because of it. It’s important here to grasp some balance between the cost and mechanical parameters of your part.

And what has a real impact on the mechanical parameters of printed products is wall thickness. It’s set during the preparation of a part for printing. Sometimes parts were gotten stronger with minimal infill but good wall thickness than parts with greater infill and small thickness.

The software automatically generates infill.

You can see below how infill was generated in CURA.