Rubber, Tires, Foam & Elastomer Manufacturing worked example

Flash Trim Labor at 81% manual trim share: a worked example

This scenario runs the flash trim labor calculation on the strong side: 81% manual trim share, with every other input held at its documented default. A production planner uses it to cost the deflashing operation on a molded rubber or elastomer part run.

The inputs for this scenario

  • Parts to Deflash: 4,000 pieces (unchanged)
  • Trim Cost per Part: 0.18 $/piece (unchanged)
  • Manual Trim Share: 81 % (raised for this scenario; the documented default is 70)
  • Cryo & Tumble Setup: 210 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Flash trim cost = parts x trim cost per part x manual share% + cryo/tumble setup) to the inputs above produces each figure below.
  • At this operating point the engine returns 793 $ for total flash trim labor cost, the number this scenario is built around.
  • At this operating point the engine returns 0.2 $ / piece for flash trim labor cost per unit.
  • At this operating point the engine returns 583 $ for variable flash trim labor cost.
  • At this operating point the engine returns 210 $ for fixed flash trim labor adder.

How this compares with the baseline

  • Against the tool's baseline example, where manual trim share sits at 70% and the headline result is 714 $, this scenario comes in 11.09% above the baseline at 793 $.
  • Use it when quoting a deflash operation or deciding whether to shift parts from manual trimming to cryogenic tumbling. 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

  • Total flash trim labor cost: 793 $ (headline result)
  • Flash trim labor cost per unit: 0.2 $ / piece
  • Variable flash trim labor cost: 583 $
  • Fixed flash trim labor adder: 210 $

Run it with your numbers

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

Last reviewed 2026-05-12.