Musical Instruments & Acoustic Products worked example
Defect Rework Rate at 3.6% target rework rate: a worked example
This worked example runs the defect rework rate numbers for a tougher week than the baseline: 3.6% target rework rate instead of the typical 5%. Track the percentage of instruments or acoustic products that come back from QC for rework, and compare it to your target rework rate.
The inputs for this scenario
- Instruments sent to rework: 8 instruments (held at the documented default)
- Instruments inspected: 250 instruments (held at the documented default)
- Target rework rate: 3.6 % (the input this scenario stresses; the baseline uses 5)
Working through the calculation
- The calculation starts from the formula this tool documents: Defect rework rate = instruments sent to rework ÷ instruments inspected × 100.
- Defect rework rate works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
- Rework rate gap to target works out to 0.4 points at these inputs.
- Instruments sent to rework works out to 8 count at these inputs.
- Instruments inspected works out to 250 count at these inputs.
How this compares with the baseline
- Against the tool's baseline example, where target rework rate sits at 5% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
- Use it for daily or weekly quality reporting, line audits, and tracking the impact of a process change. 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
- Defect rework rate: 3.2 % (headline result)
- Rework rate gap to target: 0.4 points
- Instruments sent to rework: 8 count
- Instruments inspected: 250 count
Run it with your numbers
- To rerun this with your own numbers, open the live Defect Rework Rate calculator, set target rework rate to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.