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The patented spinner system changes the way skates have been sharpened for hundreds of years.  The spinner system uses a small 1” disc precision machined with an ROH or an FBV shape.  These custom discs are diamond coated to dress the grinding stone with the specific shape. Contact RSI for all your sharpening needs and learn more about the Blackstone models available:  Portable, Single Head, Double Head, X Series, Triple Head and Stealth.


  • Easy to use
    • Each disc has only one shape, simply grab the disc with the desired ROH or FBV and install it onto the spinner system (no tools required)
  • Ability to provide ROH and FBV shapes
    • The spinner system provides the advantage of being able to sharpen ROH and FBV
  • Accurate
    • The spinner discs are precision machined with exact measurements.  The ROH shapes are true and the FBV shapes are unique to any other shape (see FBV to learn more)
  • Consistent
    • Be confident that the same shape is being provided to the customer time after time
  • Economical
    • The Spinner System sharpens the entire face of the grinding wheel at once (unlike the single point diamond which can only contact one point on the wheel at a time), resulting in a longer life for the grinding wheel
    • The spinner system extends the life of the grinding wheel which equals more sharpening per wheel
    • More skates sharpened and less consumables required equals savings and more money in your pocket


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