| Hammer Filing Jig | 1 | 06/26/2025 by Harry Doss |
| Key Bushing Jig | 1 | 06/26/2025 by Harry Doss |
| Stringing jig | 1 | 06/26/2025 by Harry Doss |
| Renner Three-Note model | 1 | 06/26/2025 by Harry Doss |
| Tuning Sourcebook 2 | 1 | 04/10/2024 by Maggie Jusiel |
| Yamaha single note vertial | 1 | 04/10/2024 by Maggie Jusiel |
| Tech sourcebook | 1 | 04/10/2024 by Maggie Jusiel |
| Tuning Sourcebook 1 | 1 | 04/10/2024 by Maggie Jusiel |
| Pratt Reed action model | 1 | 04/10/2024 by Maggie Jusiel |
