Dressing a Grinding Stone

The information below talks mostly about the various ways to dress a Valve Seat Stone, however, the principals apply to dressing any grinding stone with regard to opening the pores of the stone for a more aggressive cut to a smoother dressing of the stone for a less aggressive cutting action.




Also, keep in mind that how a stone is dressed is only one component that matters. Other things that can have an effect on how your stone works are things like coolant mix and the level of debris in the mix. The amount of force used and speed of rotation.  And even if all these things are at their best you could just have the wrong kind of stone for the metal you are trying to grind.

Take a Flywheel Grinding situation for example. If the stone gets loaded up with gummy or dirty coolant it begins to polish the surface rather than cut.  This can cause it to take much longer to finish a job, cause the grinding motor to get very hot, and in some extreme cases even leave the flywheel less than completely flat. Flywheels develop "hot spots" where the metal has been hardened in spots which makes grinding with a harder stone not work as well as using a softer stone material.


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