08-20-2012, 06:25 PM
That's OK Rick, I've been singled out before. 
When you brought that up, I have to admit that I had no idea why shaper tool holders have no rake. So to see if I was in fact talking through my hat, I went back and dusted off a few of my old text books and while all of them showed shaper tool holders with no rake, NONE of them explained why. I guess I'll need to dig a bit deeper unless someone else can shed some light on the subject. There has to be a reason, unless the rule was written by the same guy who said that compound rests need to be set at 27º to cut threads (which I don't agree with, but that's material for another thread).
Tom
When you brought that up, I have to admit that I had no idea why shaper tool holders have no rake. So to see if I was in fact talking through my hat, I went back and dusted off a few of my old text books and while all of them showed shaper tool holders with no rake, NONE of them explained why. I guess I'll need to dig a bit deeper unless someone else can shed some light on the subject. There has to be a reason, unless the rule was written by the same guy who said that compound rests need to be set at 27º to cut threads (which I don't agree with, but that's material for another thread).
Tom
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