Doors, Hardware & Access Control Manufacturing worked example

Hinge Prep Cycle Time at 7.2% template setup and inspection allowance: a worked example

This worked example runs the hinge prep cycle time numbers for a tougher week than the baseline: 7.2% template setup and inspection allowance instead of the typical 10%. Estimate machining labor for hinge mortises, reinforcements, screw holes, pivots, continuous hinges, and frame/door hinge preparations.

The inputs for this scenario

  • Hinge preps to machine: 120 preps (held at the documented default)
  • Hinge prep machining pace: 12 preps / hr (held at the documented default)
  • Template setup and inspection allowance: 7.2 % (the input this scenario stresses; the baseline uses 10)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base hinge prep hours = hinge preps to machine รท hinge prep machining pace.
  • Required hinge prep labor hours works out to 10.72 hr at these inputs, and this is the headline figure for the scenario.
  • Base hinge prep hours works out to 10 hr at these inputs.
  • Template setup and inspection allowance works out to 7.2 % at these inputs.
  • Hinge prep machining pace works out to 12 preps / hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where template setup and inspection allowance sits at 10% and the headline result is 11 hr, this scenario comes in 2.55% below the baseline at 10.72 hr.
  • Use it when scheduling a hinge-prep cell or quoting prep labor on a door order with a known count of hinge cutouts. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Required hinge prep labor hours: 10.72 hr (headline result)
  • Base hinge prep hours: 10 hr
  • Template setup and inspection allowance: 7.2 %
  • Hinge prep machining pace: 12 preps / hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Hinge Prep Cycle Time calculator, set template setup and inspection allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.