This is a sort of follow up to this question of a week ago... (Sorry, I've been way to busy fishin' to keep up with the NG, caught more fish in the last three days than any other time in my life - fishin' was HOT!)
Anyway, I read Harold's great response on how to grind a chip breaker - great post. My question, what is the best geometry for a general turning and facing tool out of HSS to do AL on my home lathe? Let's say the chip breaker cross section has a rake line at a certain angle and length then a curve at a certain diameter followed by a breaker line at a certain angle and length. (One or both of these lines could have a 0 length).
I'd just like a best guess for a start point. I've never successfully made an AL chip breaker HSS tool, especially on the light cuts I use on one-of parts on my small lathe. If anybody has a pic of a tool that works, I'd love it. A picture is worth a 1000 words.