What is the best way to grind a cutter to do engraving in tool steel.
At present I use carbide and grind three flats equally spaced at around 15 degrees on a tool and cutter grinder to a point.
The tool doesn't last long and i was after some advice.
Would 4 flets be better?
Angle is not important engraving is only 0,2 deep (.008").
Thanks in advance