Jewelry, Watches & Precision Luxury Goods worked example

Small-Batch Setup Cost at 72% share of setup billed to this run: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop share of setup billed to this run to 72%, then walk the calculation through step by step. Calculate the total production setup cost for a small batch of jewelry or watch components. Covers mold preparation, wax injection setup, casting flask preparation, tool and die changes, and CAD/CAM programming. Small batches in jewelry (5 to 50 pieces) carry higher per-piece setup costs, making this calculation critical for accurate quoting.

The inputs for this scenario

  • Batch size: 25 pieces (held at the documented default)
  • Variable setup cost per piece: 8 $ / piece (held at the documented default)
  • Share of setup billed to this run: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed setup cost: 350 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable setup total = batch size × variable setup cost per piece × production share / 100.
  • Total batch setup cost works out to 494 $ at these inputs, and this is the headline figure for the scenario.
  • Setup cost per piece works out to 19.76 $ / piece at these inputs.
  • Variable setup total works out to 144 $ at these inputs.
  • Fixed setup cost works out to 350 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where share of setup billed to this run sits at 100% and the headline result is 550 $, this scenario comes in 10.18% below the baseline at 494 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to share of setup billed to this run, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes a single fixed setup charge for the run; jobs needing multiple distinct setups or re-tooling mid-run will cost more, and the share allocation is a judgment call you must justify.

Results at a glance

  • Total batch setup cost: 494 $ (headline result)
  • Setup cost per piece: 19.76 $ / piece
  • Variable setup total: 144 $
  • Fixed setup cost: 350 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Small-Batch Setup Cost calculator, set share of setup billed to this run to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.