Foundry & Forging worked example

Pattern Cost Amortization at 110% pattern cost allocation share: a worked example

This scenario runs the pattern cost amortization calculation on the strong side: 110% pattern cost allocation share, with every other input held at its documented default. Use it when a new pattern, pattern repair, core box, rigging change, or customer revision must be recovered in part pricing.

The inputs for this scenario

  • Castings covered by pattern cost: 5,000 castings (unchanged)
  • Tooling cost spread per covered casting: 2.4 $ / casting (unchanged)
  • Pattern cost allocation share: 110 % (raised for this scenario; the documented default is 100)
  • Fixed pattern engineering cost: 3,200 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Total pattern cost amortization = castings covered by pattern cost × pattern cost per covered casting × pattern cost allocation + fixed pattern engineering cost) to the inputs above produces each figure below.
  • At this operating point the engine returns 16,400 $ for total pattern cost amortization, the number this scenario is built around.
  • At this operating point the engine returns 3.28 $ / piece for pattern cost per casting.
  • At this operating point the engine returns 13,200 $ for variable pattern cost amortization.
  • At this operating point the engine returns 3,200 $ for fixed pattern engineering cost.

How this compares with the baseline

  • Against the tool's baseline example, where pattern cost allocation share sits at 100% and the headline result is 15,200 $, this scenario comes in 7.89% above the baseline at 16,400 $.
  • Use it when quoting a new tooled part, setting amortization volume, or deciding between bundling tooling into piece price versus a separate NRE charge. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Total pattern cost amortization: 16,400 $ (headline result)
  • Pattern cost per casting: 3.28 $ / piece
  • Variable pattern cost amortization: 13,200 $
  • Fixed pattern engineering cost: 3,200 $

Run it with your numbers

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

Last reviewed 2026-05-12.