True, many designs based on the same idea.... Many designs based on others.
There is another thing I've noticed on the link supplied by Phil.
I'm not sure if it's an early attempt but that's not a ball shown in the last shot.... Close, but not a ball. (I made quite a few "acorns" when I first started to learn this!) Just wondering how easy it is to set it up for accurate cutting?
Still.... interesting solution to the toolpost into arbour issue. So many cats to skin.....
Nick,
I pictured the mounting of these types of tip in a thread I had going ages ago....
http://madmodder.net/index.php?topic=319.msg901#msg901It might help you if you read it first since I had to do exactly what you are now? The tip mounting is about half way down the page.
You might need to remove some material from the toolpost too? Might be too chunky? You might be planning to?
It might stop you getting close into the arbour? Assuming your cutting a ball on an arbour?
Of course that adjustment can be made later with little issues.
I'm looking at this and hoping it's not too much? I'm trying to help.
Tell me if it's annoying. I'd hate to be seen to be pushy. So hard to know when you've written too much?
That said I'm going to leave it at that.... Hope I've helped not hindered?
Ralph.