CNC Machining worked example

Fixture Amortization with fixture or workholding investment of 2,400 $: a worked example

Suppose fixture or workholding investment falls to 2,400 $. This page works the full calculation at that level so you can see exactly which result moves and by how much. Allocate fixture, soft jaw, pallet, vise, or workholding investment across the expected number of machined parts.

The inputs for this scenario

  • Fixture or workholding investment: 2,400 $ (the input this scenario stresses; the baseline uses 4,800)
  • Expected production quantity over fixture life: 6,000 parts (held at the documented default)
  • Utilization or scrap adjustment factor: 1 x (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Fixture Amortization = fixture or workholding investment ÷ expected production quantity × utilization or scrap factor.
  • base fixture amortization works out to 0.4 $ / part at these inputs, and this is the headline figure for the scenario.
  • Raw ratio works out to 0.4 value at these inputs.
  • Conversion factor works out to 1 x at these inputs.
  • expected production quantity works out to 6,000 value at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where fixture or workholding investment sits at 4,800 $ and the headline result is 0.8 $ / part, this scenario comes in 50% below the baseline at 0.4 $ / part.
  • It divides the fixture investment by the expected production quantity and applies a utilization or scrap factor to give a per-part fixture cost. 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

  • base fixture amortization: 0.4 $ / part (headline result)
  • Raw ratio: 0.4 value
  • Conversion factor: 1 x
  • expected production quantity: 6,000 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Fixture Amortization calculator, set fixture or workholding investment to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.