Hard Turning a Clean Sharp Edge

[spluppit]

You might need to enlighten me a little bit here..... but the images you posted look remarkably like they have been ground..... I am toolmaker by trade. I think you will find that support is your answer. I doubt anyone can give you a 100% answer unless they are involved in something very similar because processes have to be developed and you often have to throw the rule book and think outside the box.

I guess the tool shop wont tool them because they used to make them for the poster :0)