Wheel Cogging

To successfully re-cog a wheel that  will run smoothly takes time and expertise. 

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Each cog has to be rough cut by hand and fitted into the cast iron wheel. The cogs then need to be marked out and shaped to ensure that the correct pitch is obtained. When correctly done the cogs should run smoothly and quietly. Since the cog is transmitting the mills power from one machine to another the correct choice of timber is important. The wood must be close grained with no knots or evidence of splitting. Woods traditionally used are apple wood, thorn, beech, hornbeam and for damp places such as waterwheel pits, oak.