Plating, Anodizing & Surface Treatment worked example

Thickness Variation at 65% expected line uptime: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop expected line uptime to 65%, then walk the calculation through step by step. Estimate thickness variation for plating, anodizing and surface treatment using production-ready inputs so teams can confirm whether capacity can cover demand before committing the schedule.

The inputs for this scenario

  • Coated parts finished per plating cycle: 4 units / cycle (held at the documented default)
  • Plating cycles available in the period: 480 cycles (held at the documented default)
  • Expected line uptime: 65 % (the input this scenario stresses; the baseline uses 90)
  • Expected first-pass thickness-conformance yield: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross thickness variation capacity = thickness variation output per cycle × available thickness variation cycles.
  • Good thickness variation capacity works out to 1,211 units at these inputs, and this is the headline figure for the scenario.
  • Gross thickness variation capacity works out to 1,920 units at these inputs.
  • Thickness variation downtime loss works out to 672 units at these inputs.
  • Thickness variation yield loss works out to 37.44 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where expected line uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 27.78% below the baseline at 1,211 units.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to expected line uptime, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It treats uptime and yield as steady averages; a bath drifting out of spec or a rectifier fault can push actual yield well below the entered figure.

Results at a glance

  • Good thickness variation capacity: 1,211 units (headline result)
  • Gross thickness variation capacity: 1,920 units
  • Thickness variation downtime loss: 672 units
  • Thickness variation yield loss: 37.44 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Thickness Variation calculator, set expected line uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.