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Getting Some Powder in the Grind
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Discussions > Espresso > Grinders -... > Getting Some...  
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enum
Senior Member


Joined: 30 Mar 2011
Posts: 22
Location: Chicago
Expertise: I love coffee

Espresso: Rancilio Miss Silvia v3
Grinder: Modified Mazzer Super Jolly...
Drip: Clever, Aeropress, Chemex
Roaster: Behmor 1600
Posted Sat Dec 8, 2012, 1:21pm
Subject: Getting Some Powder in the Grind
 

A while ago I purchased a used Astoria grinder (a re-branded super jolly). It came with new burrs, but the grind just didn't seem very consistent for such a good machine.

The other day I took it apart to have a look at the burrs. They looked almost pristine, but when I unscrewed them, I found a thick layer of coffee grounds underneath. Is it normal for this to happen over time?

I cleaned it out real good and put it back together. The grind is definitely better, but there is still a certain amount of powder ending up in the grind. I've uploaded some pictures of what my clever dripper looks like after brewing a cup: http://imgur.com/a/smfUG

Is there anything I can do to fix this grinder? The burrs really looked quite good, though you could tell they were laying slightly crooked for some time because the outer edge of the metal on one side is worn down ever so slightly (but not on the actual burrs).

The only other thing I could think of is the threading on the stepping mechanism is all gunked up with coffee grounds so it might not be screwing down straight. I'm thinking about cleaning this out today and taking it apart again so I can snap some pictures of the burrs.
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,775
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Sat Dec 8, 2012, 4:28pm
Subject: Re: Getting Some Powder in the Grind
 

The sj is a great grinder but it is not a general use grinder. It is an espresso only grinder.

There should be no coffee under the burrs, if there was then someone did not install them properly. Coffee can build up around them but they should seat cleanly on the machined mating surfaces.

Do not try to change the angle of the adjustment colar, it is very easy to cross thread and if you do, then you will cause some very expensive damage.

I don't know if you have ever ground for espresso , but is a very fine grind, close to powder and your pics look like what I would imagine a pourover would look like from an espresso. grinder

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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enum
Senior Member


Joined: 30 Mar 2011
Posts: 22
Location: Chicago
Expertise: I love coffee

Espresso: Rancilio Miss Silvia v3
Grinder: Modified Mazzer Super Jolly...
Drip: Clever, Aeropress, Chemex
Roaster: Behmor 1600
Posted Sat Dec 8, 2012, 5:43pm
Subject: Re: Getting Some Powder in the Grind
 

Bummer. Guess I'm in the market for a different grinder. I don't really do espresso any more :\

Thanks for the info, though :)
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,775
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Mon Dec 10, 2012, 11:52am
Subject: Re: Getting Some Powder in the Grind
 

Have you tried grinding a little more coarse?
The grind size is set by the space between the burrs (you know this I am sure) so if you open them up a bit more (that grind looks a bit fine to me for pour over drip) you might have a bit better luck.

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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MJW
Senior Member


Joined: 25 Jul 2012
Posts: 179
Location: Silicon Valley
Expertise: I love coffee

Posted Tue Dec 11, 2012, 5:40pm
Subject: Re: Getting Some Powder in the Grind
 

enum Said:

The other day I took it apart to have a look at the burrs. They looked almost pristine, but when I unscrewed them, I found a thick layer of coffee grounds underneath. Is it normal for this to happen over time?

Posted December 8, 2012 link

I've taken apart a Mazzer Mini, and noticed  the same thing.  There is a mating surface, and then there's a ring underneath the bottom burr where there's a slight gap, where coffee can get in.  It's normal.  I think your grinder is operating normally.

I think Calblacksmith is right to recommend grinding coarser.  Your picture seems to show a really fine grind!
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erik82
Senior Member


Joined: 22 Oct 2012
Posts: 20
Location: The Netherlands
Expertise: I live coffee

Espresso: Olympia Cremina 2013
Grinder: HG One 83mm #0083
Drip: Kalita Wave, Aeropress,...
Roaster: Gene Cafe
Posted Wed Dec 12, 2012, 5:00am
Subject: Re: Getting Some Powder in the Grind
 

MJW Said:

I've taken apart a Mazzer Mini, and noticed  the same thing.  There is a mating surface, and then there's a ring underneath the bottom burr where there's a slight gap, where coffee can get in.  It's normal.  I think your grinder is operating normally.

I think Calblacksmith is right to recommend grinding coarser.  Your picture seems to show a really fine grind!

Posted December 11, 2012 link

My Super Jolly had the same thing. Also coffee beneath the lower burr. It's definately normal. Just clean everything once in 3months and you'll be ok.
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enum
Senior Member


Joined: 30 Mar 2011
Posts: 22
Location: Chicago
Expertise: I love coffee

Espresso: Rancilio Miss Silvia v3
Grinder: Modified Mazzer Super Jolly...
Drip: Clever, Aeropress, Chemex
Roaster: Behmor 1600
Posted Mon Dec 17, 2012, 5:09pm
Subject: Re: Getting Some Powder in the Grind
 

Those pictures are misleading. The grind is much coarser than it looks, it's just that there is some fine powdery grind mixed in (the whole problem). When the clever drains it just happens to settle on top.

I'll take some pictures of the grind before brewing in a bit here.
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enum
Senior Member


Joined: 30 Mar 2011
Posts: 22
Location: Chicago
Expertise: I love coffee

Espresso: Rancilio Miss Silvia v3
Grinder: Modified Mazzer Super Jolly...
Drip: Clever, Aeropress, Chemex
Roaster: Behmor 1600
Posted Mon Dec 17, 2012, 5:41pm
Subject: Re: Getting Some Powder in the Grind
 

Here are some better pictures of the grind: http://imgur.com/a/7NjUX#0
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