I purchased my first Dixon pricking iron - 6SPI, 1 inch - two months ago. I noticed that the prongs are not centered. I was told by the distributor that this is how they are designed. When I held the iron perpendicular, it flew out of my hand when I struck it. My other irons (Blanchard, Seiwa) are symmetrical.
My questions:
Why does Dixon grind them this way?
Is there a special technique for using them?