12-01-2023, 10:34 AM
(11-30-2023, 08:36 PM)Vinny Wrote: I'm going to take a stab at this, BTW, welcome to the forum!
The shaper pushes the bit into the metal it's cutting. A positive rake would act as a wedge forcing the bit further into the metal. The 90 degree portion only applies to the lathe where rather than diggin in on the lathe, the cutter would be forced away from the metal. On the shaper, the cutter/bit should always be at a 90 to the metal. I'm using the term "metal" as the substance you're cutting be it metal, wood, etc.. Did I answer your question or make it worse? I haven't run a shaper since high school and that was a loooooong time ago.
Vinny, thanks for the welcome and yes. A second set of eyes reading Stevec's comment cleared up my confusion over his "90 degrees". Pull head from arse.
Shaper information is quite spread out in several forums, I just keep trying to learn.
Again, thanks.
Ron