Composites, Fiberglass & Advanced Materials worked example

Tooling Amortization at 68% tool availability over the period: a worked example in composites, fiberglass & advanced materials

Suppose tool availability over the period falls to 68%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate good part capacity over composite mold or tool cycles for amortization planning.

The inputs for this scenario

  • Good parts per tool cycle: 2 parts / cycle (held at the documented default)
  • Planned tool cycles over amortization period: 500 cycles (held at the documented default)
  • Tool availability over the period: 68 % (the input this scenario stresses; the baseline uses 94)
  • First-pass yield per cycle: 96 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross tooling amortization = good parts possible per tool cycle × planned tool cycles for amortization.
  • good tooling amortization works out to 653 parts at these inputs, and this is the headline figure for the scenario.
  • gross tooling amortization works out to 1,000 parts at these inputs.
  • tooling amortization lost to downtime works out to 320 parts at these inputs.
  • tooling amortization lost to scrap or rework works out to 27.2 parts at these inputs.

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 27.66% below the baseline at 653 parts.
  • It computes the good (sellable) parts a tool yields across its planned cycles after derating for availability and first-pass yield, and shows the parts lost to each. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • good tooling amortization: 653 parts (headline result)
  • gross tooling amortization: 1,000 parts
  • tooling amortization lost to downtime: 320 parts
  • tooling amortization lost to scrap or rework: 27.2 parts

Run it with your numbers

  • To rerun this with your own numbers, open the live Tooling Amortization calculator, set tool availability over the period to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.