"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message . 3.70...
Cydrome Leader fired this volley in news:kjkt4s
:

Is this possibly due to the less backrake?


That is a zero back rake tool (assuming the tool holder isn't tilted)...
usually used for brass, bronze, and cast iron, but suitable for testing
the principle. As you can see, back rake makes a big difference in how a
tool hogs -- especially on a fairly flimsy machine.


The main advantage of having an exaggerated positive rake angle is reduced horsepower usage per unit material removal....if your tool is "hogging in" then I would suggest tightening up the slide lock..

Disadvantage of exxagerated rake being it results in a fragile tool edge, which will be more prone to premature wear via micro fracturing.

Additional issue is material property; a soft flexible bar that bends fairly easily is more likely to climb up onto the tool under negative or neutral rake than under positive.