Additive Manufacturing worked example
Infill Material at 40% infill percentage: a worked example
What does the result look like when infill percentage reaches 40%? The full calculation is worked below with real intermediate numbers. a designer or FDM estimator needs to compare infill settings before slicing or quoting a part
The inputs for this scenario
- Internal part volume: 85 cm³ (unchanged)
- Infill percentage: 40 % (raised for this scenario; the documented default is 35)
- Material density: 1.24 g / cm³ (unchanged)
- Pattern multiplier: 1.05 x (unchanged)
Working through the calculation
- Applying the documented formula (Base infill material = internal part volume × infill percentage × material density) to the inputs above produces each figure below.
- At this operating point the engine returns 4,427 g for estimated infill material, the number this scenario is built around.
- At this operating point the engine returns 4,216 g for base infill material.
- At this operating point the engine returns 1.05 x for pattern multiplier.
- At this operating point the engine returns 3,400 cm³ for volume × infill share.
How this compares with the baseline
- Against the tool's baseline example, where infill percentage sits at 35% and the headline result is 3,873 g, this scenario comes in 14.29% above the baseline at 4,427 g.
- A figure at this level is achievable when infill percentage is genuinely sustained, not just peaked for a shift. It models only the infill volume you supply — it excludes perimeters, top and bottom solid layers, and support structures, so for thin-walled parts the shells can dominate and this estimate understates total mass.
Results at a glance
- Estimated infill material: 4,427 g (headline result)
- Base infill material: 4,216 g
- Pattern multiplier: 1.05 x
- Volume × infill share: 3,400 cm³
Run it with your numbers
- Every input above is editable in the live Infill Material calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.