dagabu Posted January 8, 2012 Share Posted January 8, 2012 Ned Gorski did a white paper or sorts on the subject and explained what clearances must be used and why. Im my faint memory, the rule was the space between walls had to be at least X2 the diameter of the smallest particle and no more than X.5 the diameter of the largest particle. Softer rather than harder materials are normally used for this kind of meter since they don't shear or bind an easily. They also do not build up the same friction as do hard materials since the particles tend to roll rather then scrape when trapped. -dag Link to comment Share on other sites More sharing options...
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