A bolt-type stone mill (also known as a bolt-together stone mill or assembly stone mill) is a type of traditional grain mill that uses two grinding stones—a stationary bedstone and a rotating runner stone—held together by a central bolt or spindle mechanism. This design allows for adjustable grinding fineness and easy disassembly for cleaning or maintenance.
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Key Features of a Bolt-Type Stone Mill:
1. Adjustable Grind – The gap between the stones can be tightened or loosened by adjusting the central bolt, controlling coarseness (e.g., fine flour vs. coarse meal).
2. Traditional Stone Grinding – Typically made from natural granite or composite stones for cool, slow grinding that preserves nutrients.
3. Manual or Motorized Operation – Can be hand-cranked or attached to an electric motor.
4. Durable & Long-Lasting – High-quality stones resist wear and provide consistent milling over decades.
5. Easy Maintenance – The bolt mechanism allows for simple disassembly to clean or redress the stones.
Common Uses:
– Grinding wheat, rye, corn, and other grains into flour.
– Producing fresh, whole-grain flour with retained germ and bran.
– Crushing seeds, nuts, or spices in small-scale food processing.
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Examples of Bolt-Type Stone Mills:
– Mockmill Professional / Domestic (modern electric versions with bolt-adjusted stones).
– Meadows Mills Stone Burr Mills (classic commercial models).
– Traditional European-style hand mills (like the Austrian *Salzburger Getreidemühle*).
Would you like recommendations for specific models based on your needs (home use vs. commercial)?