samuellaw178 wrote:Is the mechanism tightened sufficiently? It seems like the inner shaft is wobbly which may explain why you get some premature rub...
Yes the inner burr is tighten sufficiently, too tight and the burr rub would get worst at earlier settings.
Grind settings at 0.7 is too coarse (visually) for espresso. my V60 settings is around 1.2-1.4.
This grinder right out of the box was giving me problems, the three lower screws were tighten too tightly, causing the adjustment ring to be unable to move. Took me a while to figure out how to resolve it as it did not come with any instructions. An expensive KS lesson learnt for me.