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Destoning roasted coffee, help please
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Ccup
Senior Member
Ccup
Joined: 13 Feb 2009
Posts: 166
Location: australia
Expertise: I live coffee

Espresso: rancilio silvia
Grinder: rancilio rocky
Drip: na
Roaster: Behmor 1600
Posted Sat Jan 5, 2013, 5:29pm
Subject: Destoning roasted coffee, help please
 

Hello everyone, I wanted to ask a questions about de stoning coffee.
I just started roasting coffee and the beans I am buying may have foreign elements in them such as sticks and stones.
I am using the behmor 1600 to roast from home.

I was thinking about de stoning and found an ingenious invention using pvc pip and a vaccum to levetate the coffee and thus the stones falling because gravity is taking the stones over the roasted coffee.

I was thinking this destone method is done my tumbling beans and gravity.

The Behmor 1600 tumbles the roasted beans to cool them down. Would this separate the stones from coffee? The drum the beans are roasted in is not fine mesh.

Is it worth making this domestic destoner?
Could you just sift roasted coffee with a large mesh sifter? or does coffee have to be air born in order the nasties to fall?

thank you

 
"A good cup of coffee starts with a seedling."
Snaggle.

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alanfrew
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alanfrew
Joined: 19 Dec 2001
Posts: 639
Location: Melbourne
Expertise: Professional

Posted Sat Jan 5, 2013, 8:31pm
Subject: Re: Destoning roasted coffee, help please
 

See my August 2012 newsletter, "Sticks & Stones."

http://www.coffeeco.com.au/newsletter/august2012.html


Alan
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JKalpin
Senior Member
JKalpin
Joined: 28 Dec 2008
Posts: 790
Location: Thornhill, Ontario Canada
Expertise: I love coffee

Espresso: Aerobie Aeropress
Grinder: Baratza Maestro Plus
Vac Pot: Yama 5-Cup
Drip: Krups Moka Brew, BraZen
Roaster: Freshroast+8, Behmor 1600
Posted Sun Jan 6, 2013, 8:29am
Subject: Re: Destoning roasted coffee, help please
 

Stones are a problem.

In my family I have 5 Baratza grinders and we have had (among us) 3 pebbles over the last 3 years.  The result was that we stripped the plastic driven gear on the counter-shaft, with 2 weeks of down-time (to get parts and install).  Fortunately, Baratza parts are reasonable, instructions are good and the worst part is getting the case open.  Baratza grinders can be repaired at home.  

One reason that I roast batches of 10 oz which yield a bit more than half a pound as roasted ...is that it is not so hard to scrutinize half a lb in a flat dish, for pebbles.

 
Jerry
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DavecUK
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Joined: 21 Sep 2005
Posts: 1,378
Location: UK
Expertise: I love coffee

Posted Sun Jan 6, 2013, 9:27am
Subject: Re: Destoning roasted coffee, help please
 

There are 3 checks for stones/junk in Coffee that need to be made:

  1. Before you roast, some stones are brown and can look like a roasted coffee bean
  2. After you roast, things that are not brown are either crap (stones and suchlike) or quakers (defective beans) and need to be removed.
  3. Each time you add beans to your grinder, check em carefully (I tip mine into the lid of my Mazzer for checking  before adding them to the hopper).

Building a domestic destoner is not worthwhile for the volumes you will roast and a reliance on the destoner simply means you're going to miss other stuff...
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Ccup
Senior Member
Ccup
Joined: 13 Feb 2009
Posts: 166
Location: australia
Expertise: I live coffee

Espresso: rancilio silvia
Grinder: rancilio rocky
Drip: na
Roaster: Behmor 1600
Posted Sun Jan 6, 2013, 3:04pm
Subject: Re: Destoning roasted coffee, help please
 

Thanks Jkalpin and DavecUK.
I only do small roasts so I guess I can pick it out by hand.
Thanks for informing me
I have a rocky rancillio grinder, burrs are easy to change.

Thanks

 
"A good cup of coffee starts with a seedling."
Snaggle.

www.snagssharkteeth.com
http://stores.ebay.com.au/Snaggles-Shark-Teeth
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