What are the top tips for print infill 3D models?

Top tips for 3D print infill involve matching infill density to part strength needs, choosing patterns for specific uses, and balancing material use with print time. Higher density (20-50%) works for load-bearing parts, while lower density (10-20%) suffices for non-structural prototypes; grid/hex patterns boost strength, gyroid adds flexibility without excess weight. Start with 20% infill (a common balanced choice) and adjust based on part performance to avoid over-infilling or weak spots.