Leather, Footwear & Accessories Manufacturing worked example

Lasting Station Capacity at 63% expected lasting machine uptime: a worked example

Suppose expected lasting machine uptime falls to 63%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate the effective daily output of a lasting station (toe lasting, side lasting, heel lasting) by combining cycle output, available cycles per shift, machine uptime, and first-pass yield.

The inputs for this scenario

  • Pairs lasted per machine cycle: 1 pairs / cycle (held at the documented default)
  • Available lasting cycles per shift: 480 cycles (held at the documented default)
  • Expected lasting machine uptime: 63 % (the input this scenario stresses; the baseline uses 88)
  • First-pass yield after lasting: 95 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross lasting capacity = pairs per cycle x available cycles per shift.
  • Good pairs per shift works out to 287 units at these inputs, and this is the headline figure for the scenario.
  • Gross lasting capacity (pairs) works out to 480 units at these inputs.
  • Pairs lost to downtime works out to 178 units at these inputs.
  • Pairs lost to quality rejects works out to 15.12 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where expected lasting machine uptime sits at 88% and the headline result is 401 units, this scenario comes in 28.41% below the baseline at 287 units.
  • It computes good (saleable) pairs lasted per shift after applying machine uptime and first-pass yield to gross cycle capacity. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Good pairs per shift: 287 units (headline result)
  • Gross lasting capacity (pairs): 480 units
  • Pairs lost to downtime: 178 units
  • Pairs lost to quality rejects: 15.12 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Lasting Station Capacity calculator, set expected lasting machine uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.