Composites, Fiberglass & Advanced Materials worked example

Tooling Amortization at 99% tool availability over the period: a worked example in composites, fiberglass & advanced materials

What does the result look like when tool availability over the period reaches 99%? The full calculation is worked below with real intermediate numbers. planning mold cost recovery across usable composite parts

The inputs for this scenario

  • Good parts per tool cycle: 2 parts / cycle (unchanged)
  • Planned tool cycles over amortization period: 500 cycles (unchanged)
  • Tool availability over the period: 99 % (raised for this scenario; the documented default is 94)
  • First-pass yield per cycle: 96 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross tooling amortization = good parts possible per tool cycle × planned tool cycles for amortization) to the inputs above produces each figure below.
  • At this operating point the engine returns 950 parts for good tooling amortization, the number this scenario is built around.
  • At this operating point the engine returns 1,000 parts for gross tooling amortization.
  • At this operating point the engine returns 10 parts for tooling amortization lost to downtime.
  • At this operating point the engine returns 39.6 parts for tooling amortization lost to scrap or rework.

How this compares with the baseline

  • Against the tool's baseline example, where tool availability over the period sits at 94% and the headline result is 902 parts, this scenario comes in 5.32% above the baseline at 950 parts.
  • A figure at this level is achievable when tool availability over the period is genuinely sustained, not just peaked for a shift. It assumes availability and yield stay constant; in reality a tool degrades late in life and yield often dips, so treat the result as a planning baseline.

Results at a glance

  • good tooling amortization: 950 parts (headline result)
  • gross tooling amortization: 1,000 parts
  • tooling amortization lost to downtime: 10 parts
  • tooling amortization lost to scrap or rework: 39.6 parts

Run it with your numbers

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

Last reviewed 2026-05-12.