Fastener Manufacturing & Thread Rolling worked example
Point Forming Time at 17% pointing allowance for setup and checks: a worked example
What does the result look like when pointing allowance for setup and checks reaches 17%? The full calculation is worked below with real intermediate numbers. Use it when scheduling drill points, dog points, cone points, gimlet points, chamfers, or other secondary point forming operations.
The inputs for this scenario
- Fasteners requiring point forming: 30,000 pieces (unchanged)
- Proven point-forming rate: 6,000 pieces / hr (unchanged)
- Pointing allowance for setup and checks: 17 % (raised for this scenario; the documented default is 15)
Working through the calculation
- Applying the documented formula (Base point forming time = fasteners requiring point forming รท proven point-forming rate) to the inputs above produces each figure below.
- At this operating point the engine returns 5.85 hr for adjusted point-forming hours, the number this scenario is built around.
- At this operating point the engine returns 5 hr for base point-forming hours.
- At this operating point the engine returns 17 % for pointing allowance applied.
- At this operating point the engine returns 6,000 pieces / hr for point-forming rate.
How this compares with the baseline
- Against the tool's baseline example, where pointing allowance for setup and checks sits at 15% and the headline result is 5.75 hr, this scenario comes in 1.74% above the baseline at 5.85 hr.
- A figure at this level is achievable when pointing allowance for setup and checks is genuinely sustained, not just peaked for a shift. It assumes a single steady proven rate; multi-cavity changes, material hardness swings or tool wear that slows the line mid-run aren't captured by one allowance.
Results at a glance
- Adjusted point-forming hours: 5.85 hr (headline result)
- Base point-forming hours: 5 hr
- Pointing allowance applied: 17 %
- Point-forming rate: 6,000 pieces / hr
Run it with your numbers
- Every input above is editable in the live Point Forming Time calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.