When printing infill for 3D models, makers adjust infill density (10-50%) and pattern (grid, honeycomb, gyroid) in slicer software (e.g., Cura, PrusaSlicer) based on the model’s purpose.
Infill balances strength and weight—low density (10-20%) saves material for decorative pieces, while higher density (30-50%) boosts durability for functional parts like brackets or handles.
For beginners, test a small cube with different settings first. This helps you see how infill affects print time and strength without wasting material on larger projects.