On 18/05/2017 6:58 PM, paul womack wrote:
> Tony Blanks wrote:
> > Since the "depth of cut" when used to scratch the surface of a
> piece with such a plane is effectively the depth of the vee between
> the teeth, it seems to me to make sense to grind these blades with a
> steeper bevel to better support the teeth.
> But the effective depth of the vee is a combination of the
> perpendicular depth of the vee, AND THE BEVEL ANGLE.
> It is obvious that grinding at 90 degrees would give no teeth at all,
> the rest follows by extrapolation.
Oh that hurts, but thanks Bugbear. Clearly I spent too much time being
puzzled by this problem and insufficient time analysing, thinking about,
or even giving passing consideration to how the 'teeth' are formed. I
was thinking in terms of the toothed edge of the blade, rather than that
the teeth are the product of a ridged face and the bevel angle. 2
lessons in one response is good value!