All this talk of cleaning the wheel using explosive material makes me wonder if cranking too fast is a dangerous proposition.
 
   Don't forget that wood is a fibrous material and when wet will swell ( if even on the minutest level ) and the grain will lift causing a change in the surface of the wheel. Make sure to lightly sand the wheel to help remove the raised grain. If you have a solid or plywood wheel remember that the grain in the wood changes and you may want to sand the grain turning the wheel clockwise and counter clockwise to help make sure the wheel is fully smooth. Always finish the sanding in the direction of play. I like to use 600 grit ( sorry I am not sure if this translates the same across the world....what is 600 grains per square inch in metric terms? ). Never sand to hard or to long as it does not take much to smooth those very fine wood grains.
 
    Scott
 
   

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