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Discussions > Coffee > Q and A > Hario Mini Mill...  
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jbviau
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jbviau
Joined: 12 Jul 2010
Posts: 711
Location: Pembroke Pines, FL
Expertise: I love coffee

Grinder: Preciso / LIDOs
Drip: Trifecta MB / Eva Solo...
Posted Mon May 9, 2011, 8:03am
Subject: Re: Hario Mini Mill Slim
 

Netphilosopher Said:

...12 clicks is between 250-350 particles per bean, but the grind size is very inconsistent.  Large chunks with pieces that are easily 1/4 the size next to it, and a bit of finer particles.

Posted May 9, 2011 link

Just out of curiosity, how are you estimating particles per bean? Or are you actually counting?!
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aecletec
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Location: Australia
Expertise: I like coffee

Espresso: Presso
Grinder: Faema A6
Drip: Chemex
Posted Mon May 9, 2011, 8:19am
Subject: Re: Hario Mini Mill Slim
 

Brings new meaning to a bean-counter! Interesting info nonetheless.
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Netphilosopher
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Posted Mon May 9, 2011, 10:16am
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pioneer478
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Posted Mon May 9, 2011, 2:26pm
Subject: Re: Hario Mini Mill Slim
 

Well done..no one can ever accuse you of not being detailed enough in your analysis! :)

I'm currently using the Mini Slim with an auto drip brewer at work, and so far 8 clicks seems to be my preference.  However, I have to admit - I'm a bit disappointed at the overall consistency of the grinder.  Yes, you can expect more variance in particle size the coarser you get, but even at 8 clicks, I notice what I consider to be a decent amount of "rocks and boulders" in the mix.  Maybe I'm being overly harsh since I use a Vario at home, but I swear my grind is noticeably less consistent than my Infinity was (which admittedly is a great entry-level burr grinder, but I'd still expect more from the Hario).

Oh well, for work it'll have to do - if I had more room I'd just bring in the old Capresso..but unfortunately my cramped cubicle isn't getting any bigger. :\
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Netphilosopher
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Posted Tue May 10, 2011, 4:33am
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Netphilosopher
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Posted Mon May 16, 2011, 5:19am
Subject: ...
 

...

Netphilosopher: small_x_dark.gif
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austin
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Joined: 23 Apr 2011
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Location: Los Angeles
Expertise: I like coffee

Posted Mon May 16, 2011, 10:52am
Subject: Re: Hario Mini Mill Slim
 

@NetPhilosopher-

I tried cleaning up the slop in the mini mill using your mod ideas with the tape at the two bushings.  It cleaned up the shaft wobble considerably.  However, I went a step further and wound tape around the outer ceramic burr so it would fit tightly in the plastic housing.  Before that, the outer burr would wobble as well in the plastic sub assembly.

There still is a little bit of grind wobble that I believe is caused from the slop between the inner cone and the shaft.  My next step is to add tape where the inner ceramic cone's bushing meets the shaft.
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Netphilosopher
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Posted Mon May 16, 2011, 1:28pm
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austin
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Location: Los Angeles
Expertise: I like coffee

Posted Mon May 16, 2011, 2:29pm
Subject: Re: Hario Mini Mill Slim
 

I took care of the slop in the inner cone burr to the plastic insert by wedging in two fold post-it notes in between the circular plastic insert and the fat side of the inner cone.  I then traced the circumference of the cone on the post it notes, pulled them out, cut them and wedged them back in.  Not sure if that is a clear explanation, but just wedge/shim something in between the plastic insert and the bottom of the cone and you'll see that it prevents the plastic from moving inside the ceramic burr.

Now all I have to do is clean up the slop between the shaft and the plastic insert.....
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Netphilosopher
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Posted Wed May 18, 2011, 7:57am
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