You might ask: Why not use a dedicated gear design suite like KISSsoft or MITCalc?
The answer lies in control, cost, and customization.
If you prefer not to build from scratch:
| Issue | Risk | |-------|------| | Missing profile shift correction | Causes wrong tooth thickness | | No difference between generating and non‑generating root | Overestimates strength | | Incorrect tolerance lookup (e.g., treating 7H as a simple +offset) | Non‑conforming spline | | Forgetting that DIN 5480 uses reference diameter not pitch diameter like ISO 4156 | Wrong calculations | | No validation for odd number of teeth | Measurement over pins may be wrong |