it is not just being stepless. It is a matter of geometry (I think):pacificmanitou wrote:Don't all mazzers use the same adjuster though? So the adjustability isn't exclusive to conicals

Repeating myself one again, I was an art major, so this may not be mathematically accurate (or even correct). X = adjustment distance and direction of movement. Y = distance (or change is distance) between burrs..

In the first (top) example, the burrs being parallel and the adjustment movement perpendicular to the grinding faces, the vertical movement of the top burr would be equal to the change in gap between them.

In the bottom example I go to an extreme. The burrs' grinding faces are once again parallel as in the top example, but the adjustment movement is in the same plane as the grinding faces. Here, the distance between the burrs remains constant (unchanged) regardless as to how far the adjustable burr is moved.

The middle example represents conical burrs. Now, my math may be off, but I tried to show burrs with faces that are at a 45 degree angle. Here I am assuming that the distance between the burrs changes at a rate that is less then the movement of the adjustable burr. it may take something like a logarithm to be accurate and that is beyond my mathematical or geometrical abilities. one of the engineers maybe can assist as to the ratio of movement to adjustment distance...?

Oh oh.. he is assuming! My foot's in it now... A friendly pull or push would be appreciated.