Cirelli grind for a perfect parallel heel on an onglette with the Dual Angle fixture

Mike Cirelli

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This is done by grinding the top of the onglette graver holding it by the tang. I use 45 degree mark as my 0. Left and right at 15, and 75 degrees to grind a 30 degree angle on each side of the top of the graver. This is done the same as I showed for a flat graver in a previous thread. This will allow the graver to fit in the dual angle fixture the same every time. Then I grind a 45 face holding the graver with the newly ground top. Then I set my post dial to 15 degrees for my heel. I leave the dial lock screw loose. On a ceramic wheel start at the top corner of the face and roll it down to the tip, do this on both sides and you will get a perfect parallel heel as you can see in the pictures.

The 1st and 2nd picture show the top grind, the 3rd and 4th the heel.
 

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