PLM, BOM & Digital Thread worked example

CAD Library Duplication Cost at 54% confirmed redundant copies: a worked example

Suppose confirmed redundant copies falls to 54%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimates the storage and stewardship cost of redundant CAD geometry copies scattered across the model library.

The inputs for this scenario

  • Duplicated CAD models in the library: 900 models (held at the documented default)
  • Storage and maintenance cost per model: 22 $/model/yr (held at the documented default)
  • Confirmed redundant copies: 54 % (the input this scenario stresses; the baseline uses 75)
  • De-duplication tooling cost: 5,000 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Total cost = duplicated models x maintenance cost x redundant share + de-dup tooling.
  • Total cad library duplication cost works out to 15,692 $ at these inputs, and this is the headline figure for the scenario.
  • Cad library duplication cost per unit works out to 17.44 $ / piece at these inputs.
  • Variable cad library duplication cost works out to 10,692 $ at these inputs.
  • Fixed cad library duplication cost adder works out to 5,000 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where confirmed redundant copies sits at 75% and the headline result is 19,850 $, this scenario comes in 20.95% below the baseline at 15,692 $.
  • It computes total annual duplication cost and cost per duplicated model from the duplicate count, per-model maintenance cost, the confirmed-redundant share, and de-duplication tooling spend. 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

  • Total cad library duplication cost: 15,692 $ (headline result)
  • Cad library duplication cost per unit: 17.44 $ / piece
  • Variable cad library duplication cost: 10,692 $
  • Fixed cad library duplication cost adder: 5,000 $

Run it with your numbers

  • To rerun this with your own numbers, open the live CAD Library Duplication Cost calculator, set confirmed redundant copies to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.