Additive Manufacturing worked example

Infill Time Impact at 23% infill travel allowance: a worked example

Push infill travel allowance up to 23% and the picture changes. This example computes every intermediate figure at that operating point. a print technician or estimator needs to compare 15%, 35%, and 60% infill print-time impact

The inputs for this scenario

  • Infill extrusion amount: 210 g (unchanged)
  • Effective infill print rate: 3.5 g / min (unchanged)
  • Infill travel allowance: 23 % (raised for this scenario; the documented default is 20)

Working through the calculation

  • Applying the documented formula (Base infill print time = infill extrusion amount รท effective print rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 73.8 hr for adjusted infill print time, the number this scenario is built around.
  • At this operating point the engine returns 60 hr for base infill extrusion time.
  • At this operating point the engine returns 23 % for travel/pattern allowance.
  • At this operating point the engine returns 3.5 g / min for effective infill print rate.

How this compares with the baseline

  • Against the tool's baseline example, where infill travel allowance sits at 20% and the headline result is 72 hr, this scenario comes in 2.5% above the baseline at 73.8 hr.
  • It estimates infill print time in hours from the grams of infill extruded, the effective infill flow rate, and a travel and pattern allowance. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Adjusted infill print time: 73.8 hr (headline result)
  • Base infill extrusion time: 60 hr
  • Travel/pattern allowance: 23 %
  • Effective infill print rate: 3.5 g / min

Run it with your numbers

  • Every input above is editable in the live Infill Time Impact calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.