Finishing worked example

Film Thickness at 92% transfer efficiency: a worked example

This scenario runs the film thickness calculation on the strong side: 92% transfer efficiency, with every other input held at its documented default. Use this calculator for practical powder coating or surface finishing planning, quoting, troubleshooting, or line setup.

The inputs for this scenario

  • Coated surface area: 500 ft² (unchanged)
  • Target dry film build per square foot: 2 mils (unchanged)
  • Transfer efficiency: 92 % (raised for this scenario; the documented default is 80)

Working through the calculation

  • Applying the documented formula (Coverage requirement = area × thickness ÷ efficiency) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,087 mils for required quantity, the number this scenario is built around.
  • At this operating point the engine returns 1,000 mils for theoretical amount.
  • At this operating point the engine returns 86.96 mils for loss allowance.
  • At this operating point the engine returns 92 % for efficiency.

How this compares with the baseline

  • Against the tool's baseline example, where transfer efficiency sits at 80% and the headline result is 1,250 mils, this scenario comes in 13.04% below the baseline at 1,087 mils.
  • Use it when estimating powder for a job, setting gun output for a target mil build, or checking why powder usage runs over. 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

  • Required quantity: 1,087 mils (headline result)
  • Theoretical amount: 1,000 mils
  • Loss allowance: 86.96 mils
  • Efficiency: 92 %

Run it with your numbers

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

Last reviewed 2026-05-12.