The graver config is not much different than a graver tapered with a Lindsay template. Grind the bottom "V" flat and then turn it upside down just as it looks in the diagram. It doesn't matter how it is done, just as long as it is offset and tapers to a very small flat point. I don't have any specific dimensions .. wish I did .. the first time I did this I just used an old graver and ground the bottom of the "V" off as mentioned above. Ron P. showed me that actually.
Just gotta give it a try man ...
Catch ya later ... time is short.