Tooling, Fixtures, Dies & Mold Economics worked example

Die Sharpening Interval at 65% expected press uptime over the interval: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop expected press uptime over the interval to 65%, then walk the calculation through step by step. Estimate die sharpening interval for tooling, fixtures, dies and mold economics using production-ready inputs so teams can confirm whether capacity can cover demand before committing the schedule.

The inputs for this scenario

  • Parts stamped per die stroke: 4 units / cycle (held at the documented default)
  • Strokes available before scheduled sharpening: 480 cycles (held at the documented default)
  • Expected press uptime over the interval: 65 % (the input this scenario stresses; the baseline uses 90)
  • Expected first-pass yield between sharpenings: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross die sharpening interval capacity = die sharpening interval output per cycle × available die sharpening interval cycles.
  • Good die sharpening interval capacity works out to 1,211 units at these inputs, and this is the headline figure for the scenario.
  • Gross die sharpening interval capacity works out to 1,920 units at these inputs.
  • Die sharpening interval downtime loss works out to 672 units at these inputs.
  • Die sharpening interval 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 press uptime over the interval 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 press uptime over the interval, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes a flat average yield across the interval, but real dies degrade non-linearly — yield often holds then falls off a cliff near end of edge life, so short intervals may outperform this estimate.

Results at a glance

  • Good die sharpening interval capacity: 1,211 units (headline result)
  • Gross die sharpening interval capacity: 1,920 units
  • Die sharpening interval downtime loss: 672 units
  • Die sharpening interval yield loss: 37.44 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Die Sharpening Interval calculator, set expected press uptime over the interval to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.