The heel relieving graver can go deeper into the metal than a traditional graver point using the same power level. The heel on the traditional graver point is actually
giving more resistance as it is driven through the metal. This is especially evident around corners like those
illustrated in the above plate above. While making a cut, the
traditional graver tends to come up out of the metal, and it is therefore necessary to push straight down on the point itself to hold and keep it in the cut around the
corner. This is why various books and instructions in the past advised engravers to hold their index finger on top of the point and push down to
keep it in the cut when using a power assisted tool. This is necessary with the traditional graver, or it would be out of the cut and sliding across the work. The downward pressure, however, also contributes to casting a bur on the edge of the cut. The downwards push is trying to
force the tip to do something it refuses to do. This will help raise burs, and may require sanding the surface of the engraving when finished. After engraving, the
surface should not need to be sanded or re-polished. If sanding is necessary, there is something wrong with the graver point. Sanding takes away the grays that were
achieved while shading, and will lighten the overall engraving. It will also leave white streaks in the grays of the shading. The patented point solves this by
making downward pressure unnecessary.
The uniform parallel geometry has a shorter heel because of the secondary relief facets, and allows the cutting edge to go
through the metal cleanly. The point more efficient in cutting, and required less power than a traditional point to execute a cut of the
same depth. The cuts in the sample plate illustrate this by the dramatic increased depth seen in the cuts made by the patented geometry, given the same amount of power
and impact frequency as the traditional point cuts. Since the point is cutting more easily, there is less force on it, and therefore the breaking of points
is less likely.