Peppersass wrote:Marshall, I'm afraid your comments don't apply to the Baratza Vario, which has a unique calibration system that sometimes requires adjustment. In this case, calibration does not mean aligning the grind setting numbers with a particular degree of fineness. Rather, it means adjusting the range of the grinder so that it's capable of grinding fine enough for espresso.
That would be my reason "1" above. Years ago I used one of the earlier Baratza grinders for espresso, and alt.coffee had very useful instructions for changing the grind range toward the finer side.
I don't think of that as calibrating, though. I was addressing people who can't sleep at night because their dial doesn't read "0" when the burrs touch.