Sinker Manufacturer (Stone-made)
ちんしせいぞうこう（せきせい）
Industry & Occupation
Classification
Summary
This occupation involves processing and manufacturing stone-made sinkers (weights) used in fishing gear and nets, using stone as raw material, through cutting, polishing, drilling, etc.
Description
The Sinker Manufacturer (Stone-made) is a craftsman who produces stone products used as sinkers (weights) for fishing tackle and fishing nets. After selecting raw stones, they shape them using cutting machines and polishing machines, and form holes with a drill to create sections for threading strings. Products are weighed on scales and fine-tuned to meet specified values. Durability and underwater performance are verified, followed by quality inspection before shipment. Much of the work is manual, and the level of skill greatly influences the finish.
Future Outlook
With metal and plastic sinkers becoming mainstream, demand for stone-made sinkers is decreasing. Niche market sustainability is expected through high value-added products utilizing traditional techniques, utilization as tourist resources, and the use of recycled materials.
Personality Traits
Honest / Meticulous / Patient
Work Style
Career Path
Apprentice → Skilled Worker → Supervisor → Factory Manager/Supervisor → Independent (Self-employed)
Required Skills
Drilling Processing / Polishing Skills / Stone Cutting and Processing Skills / Weighing Skills
Recommended Skills
Quality Control / Safety and Health Knowledge / Tool Maintenance
Aptitudes (Strengths Preferred)
| Item | Description |
|---|---|
| Attention to Detail & Accuracy | Because even small differences in weight affect product performance. |
| Numerical & Quantitative Analysis | Because accurate measurement and adjustment of weight and dimensions are necessary. |
| Physical Stamina & Endurance | Handling stone materials involves a lot of work, requiring physical strength. |
Aptitudes (Weaknesses Acceptable)
| Item | Description |
|---|---|
| Communication Skills | Work is mostly performed individually, so communication is limited. |
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