Tool Sharpening, Reconditioning & Industrial Repair Services worked example
Regrind Yield at 68% target salvage rate: a worked example
This worked example runs the regrind yield numbers for a tougher week than the baseline: 68% target salvage rate instead of the typical 95%. Regrind yield tells a reconditioning shop what fraction of an inbound tool batch could not be salvaged, so it is the scrap side of your salvage performance.
The inputs for this scenario
- Tools scrapped or rejected after regrind: 8 units (held at the documented default)
- Tools entering the regrind batch: 250 units (held at the documented default)
- Target salvage rate: 68 % (the input this scenario stresses; the baseline uses 95)
Working through the calculation
- The calculation starts from the formula this tool documents: Regrind Yield rate = affected amount รท total amount.
- Rate works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
- Gap to target works out to 64.8 points at these inputs.
- Affected count works out to 8 count at these inputs.
- Total count works out to 250 count at these inputs.
How this compares with the baseline
- Against the tool's baseline example, where target salvage rate sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
- Use it after finishing a regrind batch to score salvage performance, or during intake to test whether a worn incoming lot is worth accepting. 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
- Rate: 3.2 % (headline result)
- Gap to target: 64.8 points
- Affected count: 8 count
- Total count: 250 count
Run it with your numbers
- To rerun this with your own numbers, open the live Regrind Yield calculator, set target salvage rate to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.