To give you a starting point for the Robot, I was anywhere between 1.6.8 to 1.7.2, and adjusting finer or coarser depending on the bean as needed.What setting do you find best for the robot?
Grinders are one of the keys to exceptional espresso. Discuss them here.
I wanna bring up one concern (or maybe it is more like an observation so far). Anyone who owns one of 1Zpresso's models with a threaded grounds cup also experiencing abrasion of their thread? I do, it is constantly being created through attrition when screwing it loose or tight and settles down as grey dust within the turns of the thread. So I was wondering: is this something that we should be concerned about? Could the fine aluminium dust end up in our cups? That would not be great, I guess. Thoughts, experiences, anyone?
I always thought (and still think), this were very fine coffee grounds which got stuck there and were sorta crushed or squeezed again and then oxizidized or something. Overall I dont believe it's fine aluminium powder but coffee.
Interesting thought. I'd be very happy if that were true. I'll make sure to take that into consideration next time I wipe the thread to get rid of it and take a closer look with a magnifier or sthg. The colour indicates that it is something different than coffee, though, because it looks greyish, slightly metallic, almost anthracite. I might also write 1Zpresso about it - still the most responsive (and nice) customer service I ever dealt with.
Do you notice this fine dust every time you use it? If so, have you tested the theory by just screwing the catch cup on and off to see if a dust is created from that alone?
No, it builds up. I wasn't really thinking about the implications until I cleaned the whole grinder thorougly a few days ago. I might try your method and see if it helps to test my theory/osbervation, even though I am bit afraid that if I'm right, that I will stress the very thin material where the turns begin unnecessarily. But then again... I wanna know for sure what this is, to be honest.