Practical tools for measured work
Leather Corner Stitch Spacing Calculator
Distribute stitch holes through straight runs and a rounded corner.
Calculate the layout, check the diagram, then print the result for the shop or jobsite.
Print at 100% / actual size. Measure the 50 mm calibration line before marking leather.
Hole centres from first straight run
| Hole | Path position |
|---|---|
| 1 | 0 mm |
| 2 | 3.86 mm |
| 3 | 7.73 mm |
| 4 | 11.59 mm |
| 5 | 15.45 mm |
| 6 | 19.32 mm |
| 7 | 23.18 mm |
| 8 | 27.04 mm |
| 9 | 30.9 mm |
| 10 | 34.77 mm |
| 11 | 38.63 mm |
| 12 | 42.49 mm |
| 13 | 46.36 mm |
| 14 | 50.22 mm |
| 15 | 54.08 mm |
| 16 | 57.95 mm |
| 17 | 61.81 mm |
| 18 | 65.67 mm |
| 19 | 69.53 mm |
| 20 | 73.4 mm |
| 21 | 77.26 mm |
| 22 | 81.12 mm |
| 23 | 84.99 mm |
| 24 | 88.85 mm |
How it works
The path consists of a straight run, a quarter-circle with length πr/2, and a second straight run. A whole number of intervals is fitted to the complete path, keeping spacing continuous through each tangent.
Current-input example
The result above uses these exact values. This snapshot is included when the page is printed so the output can be checked against the original measurements.
- Units
- Millimetres
- Straight run before corner
- 35
- Straight run after corner
- 35
- Stitch-line corner radius
- 12
- Desired stitch pitch
- 3.85
Primary result: Actual pitch: 3.86 mm.
Before using the result
- Measure from the datum or reference edge described by this tool, and do not mix inside, outside and centerline dimensions.
- Keep inputs in the displayed units and preserve more precision than the final cutting or purchasing tolerance requires.
- When the result is close to a limit, verify it with a test piece, field measurement, manufacturer drawing or qualified project professional.
Limitations
The diagram assumes a 90° corner and a stitch line at the radius entered. Verify pricking-iron angle and spacing on scrap.
Frequently asked questions
What should I verify before using this result?
Recheck the physical measurements, confirm that every input uses the displayed unit, and compare the result with the applicable drawing, product specification, code requirement or test piece.
Why might the finished result differ?
Real work can include thickness, kerf, seams, tolerances, hardware allowances, installation clearances or site conditions that are outside the calculation. The limitations section identifies the main exclusions for this tool.
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