Jewelry, Watches & Precision Luxury Goods worked example

Polishing Time at 17% compound change and inspection allowance: a worked example

This scenario runs the polishing time calculation on the strong side: 17% compound change and inspection allowance, with every other input held at its documented default. Use when scheduling polishing work for a production batch, custom order, or repair job. Helps finishers and production managers estimate labor hours, schedule workbench time, and quote finishing costs accurately.

The inputs for this scenario

  • Pieces to polish: 50 pieces (unchanged)
  • Polishing throughput rate: 6 pieces / hr (unchanged)
  • Compound change and inspection allowance: 17 % (raised for this scenario; the documented default is 15)

Working through the calculation

  • Applying the documented formula (Base polishing time = pieces to polish รท polishing throughput rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 9.75 hr for scheduled polishing time, the number this scenario is built around.
  • At this operating point the engine returns 8.33 hr for base polishing time.
  • At this operating point the engine returns 17 % for compound and inspection allowance applied.
  • At this operating point the engine returns 6 pieces / min for polishing throughput rate.

How this compares with the baseline

  • Against the tool's baseline example, where compound change and inspection allowance sits at 15% and the headline result is 9.58 hr, this scenario comes in 1.74% above the baseline at 9.75 hr.
  • Use it when scheduling the finishing room, sizing a batch before final QC, or pricing the polishing portion of a job. 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

  • Scheduled polishing time: 9.75 hr (headline result)
  • Base polishing time: 8.33 hr
  • Compound and inspection allowance applied: 17 %
  • Polishing throughput rate: 6 pieces / min

Run it with your numbers

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

Last reviewed 2026-05-12.