I haven't taken it apart in a while, so going by remembry... once you have the center burr off, I think you just have to pull the spring off the bottom. Then, rotate the center shaft until the ears line up with the lower bearing notches, and pull it straight out the top. The lower bearing can be free-rotating, it does have a place to sit and stay unrotating, but it doesn't take much for it to release and spin with the shaft. Just use a flashlight and you'll see the notches that need to line up with the ears of the shaft.
------------------------------------------ ----------------------------------------- Le café doit être noir comme le diable, chaud comme l'enfer, pur comme un ange, et doux comme l'amour.
"There is no right answer with coffee. There is only the elixir in your cup at the moment you partake."
"...I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind;..." - Lord Kelvin RECIPES thread => http://www.coffeegeek.com/forums/coffee/machines/585708
I still use this mill on occasion, but I find that the modifications just don't last that long, about 2kg of coffee and then the center shaft begins to develop slop.
The burrs work very well if they are secure and concentric - but this whole assembly is only $30 and it's made of plastic, so we shouldn't be surprised that it is suboptimized. Modifications to improve the center burr stability make the adjustability more difficult (like making a locknut to lock the center burr exactly at a certain length along the shaft and eliminate ALL wobbling).
It's possible to put the center burr on a multi grooved spline shaft, but that center shaft (at that size) would be a true pain to manufacture. It's a good way to turn a $30 grinder into a multihundred dollar grinder... and since OE makes such gorgeous stuff why reinvent the wheel... er... grinder?
------------------------------------------ ----------------------------------------- Le café doit être noir comme le diable, chaud comme l'enfer, pur comme un ange, et doux comme l'amour.
"There is no right answer with coffee. There is only the elixir in your cup at the moment you partake."
"...I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind;..." - Lord Kelvin RECIPES thread => http://www.coffeegeek.com/forums/coffee/machines/585708
sgnoobie Senior Member Joined: 22 Jun 2011 Posts: 30 Location: San Francisco Bay Area Expertise: I live coffee
Grinder: HMMS Drip: v60 02 Roaster: Blue Bottle, Ritual,...
Posted Sun Mar 10, 2013, 1:06pm Subject: Re: Hario Mini Mill Slim
ducksredux Said:
Maybe it's just that I'm not a tinkerer but it seems absurd to spend all that time modding this grinder after it's been pointed out that plastic particles undoubtedly end up in the grounds. Aside from it affecting the taste imagine what ingesting extracted and melted polyethylene does to your body.
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