Tool Sharpening, Reconditioning & Industrial Repair Services worked example

Edge Prep Time at 7.2% fixturing & inspection allowance: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop fixturing & inspection allowance to 7.2%, then walk the calculation through step by step. Edge prep (edge honing) puts a controlled radius or chamfer on a freshly reground cutting edge so the tool doesn't chip on first contact.

The inputs for this scenario

  • Cutting edges to prep this batch: 120 units (held at the documented default)
  • Edges honed per hour on the edge-prep station: 12 units / hr (held at the documented default)
  • Fixturing & 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 edge prep time time = required work รท processing rate.
  • Adjusted run time works out to 10.72 hr at these inputs, and this is the headline figure for the scenario.
  • Base run time works out to 10 hr at these inputs.
  • Allowance applied works out to 7.2 % at these inputs.
  • Process rate works out to 12 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where fixturing & 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.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to fixturing & inspection allowance, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. A single hone rate assumes similar tool geometry across the batch; mixing 4-flute endmills with drills or inserts skews the average and understates real time.

Results at a glance

  • Adjusted run time: 10.72 hr (headline result)
  • Base run time: 10 hr
  • Allowance applied: 7.2 %
  • Process rate: 12 pieces / min

Run it with your numbers

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

Last reviewed 2026-05-12.