Injection Molding worked example

Mold Amortization Cost with total mold investment of 42,500 $: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop total mold investment to 42,500 $, then walk the calculation through step by step. Calculate the tooling cost amortized per part from total mold investment and expected lifetime production volume.

The inputs for this scenario

  • Total mold investment: 42,500 $ (the input this scenario stresses; the baseline uses 85,000)
  • Expected lifetime production volume: 500,000 parts (held at the documented default)
  • Maintenance cost adder: 1.1 x (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Amortized cost per part = (Mold investment x Maintenance adder) / Lifetime volume.
  • Result works out to 23,375,000,000 $/part at these inputs, and this is the headline figure for the scenario.
  • Base amortization (cost / volume) works out to 23,375,000,000 value at these inputs.
  • Multiplier works out to 1 x at these inputs.
  • Factor A x B works out to 21,250,000,000 value at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where total mold investment sits at 85,000 $ and the headline result is 46,750,000,000 $/part, this scenario comes in 50% below the baseline at 23,375,000,000 $/part.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to total mold investment, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes the full lifetime volume is actually produced; if the program ends early, the real per-part cost is higher because fewer parts absorbed the tooling cost.

Results at a glance

  • Result: 23,375,000,000 $/part (headline result)
  • Base amortization (cost / volume): 23,375,000,000 value
  • Multiplier: 1 x
  • Factor A x B: 21,250,000,000 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Mold Amortization Cost calculator, set total mold investment to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.