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Thread: Stones 'n stuff I've found in coffee...

  1. #51
    Senior Member Yelta's Avatar
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    Quote Originally Posted by knastoer View Post
    Do you sort through your beans to make sure there are no sticks, stones or other items that you don't want in your grinder?
    If you do, did you ever find anything - or have you had the misfortune that your grinder found it first?
    I always check green beans prior to and after roasting, in 10 years I've found a couple of small stones, never had one go through the grinder.

    Have never found anything foreign in store bought beans, I believe commercial roaster put all of their beans through a destoner.

  2. #52
    Super Moderator Javaphile's Avatar
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    Not a problem! It helps knowing who posted in such a thread and any likely wording of its' title to help narrow the results down with the search engine. Both of which only come with time.


    Java "Time to what?" phile
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  3. #53
    Life-long Learner DesigningByCoffee's Avatar
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    Quote Originally Posted by knastoer View Post
    Do you sort through your beans to make sure there are no sticks, stones or other items that you don't want in your grinder?
    If you do, did you ever find anything - or have you had the misfortune that your grinder found it first?
    I have a little home-made destoner … works a treat. Every roasted batch goes through it. As you can see - it works!
    This is about 3 years worth…

    IMG_1629.jpg DBC-Destoner-.jpg
    Dimal likes this.

  4. #54
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    I like, have you got any details on what goes into making that?

  5. #55
    Senior Member Yelta's Avatar
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    Quote Originally Posted by DesigningByCoffee View Post
    I have a little home-made destoner … works a treat. Every roasted batch goes through it. As you can see - it works!
    This is about 3 years worth…

    IMG_1629.jpg DBC-Destoner-.jpg
    Obviously your destoner works better than my eyes.

    I sometimes wonder how many get through and get ground with the coffee, the stones I have found have been of soft material, doubt they would have damaged the burrs anyway.

    Regardless it's good to remove them, you only need a small piece of granite or metal and its goodby burrs.

  6. #56
    Senior Member greenman's Avatar
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    Quote Originally Posted by Yelta View Post
    Obviously your destoner works better than my eyes.

    I sometimes wonder how many get through and get ground with the coffee, the stones I have found have been of soft material, doubt they would have damaged the burrs anyway.

    Regardless it's good to remove them, you only need a small piece of granite or metal and its goodby burrs.
    Recently if heard an agonising noise emanating from my Baratza Preciso filter grinder, sadly a square shaped piece of white quartz had snuck through my screening process and lodged itself in the blades and seized the grinder.
    After removing the offending piece of quartz I discovered that the gears driving the blades had been stripped, I decided to cut my losses instead of spending money on repairing it and got a new Baratza Encore which is doing a great job!!
    Henceforth I have been studiously checking my roasts before bagging them!

  7. #57
    Life-long Learner DesigningByCoffee's Avatar
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    Quote Originally Posted by Hipsi View Post
    I like, have you got any details on what goes into making that?
    Hi Hipsi

    It was just a few lengths of poly and some fittings from Bunnings, plus a paint bucket from the same.
    The exotic looking airflow adjuster with metal handle is now unnecessary (I originally intended to use it with a full strength vac) as I found an adjustable suction vac come council cleanup time

    There are some more detailed photos in my album…

    http://coffeesnobs.com.au/members/de...de-stoner.html

    It has certainly earned its keep - especially when people started buying my beans!

    Cheers Matt
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  8. #58
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    Quote Originally Posted by DesigningByCoffee View Post

    There are some more detailed photos in my album…

    http://coffeesnobs.com.au/members/de...de-stoner.html

    It has certainly earned its keep - especially when people started buying my beans!

    Cheers Matt

    I can certainly imagine it would do. Now call me slow, or Queenslander (if the shoe fits...) but picture it working by sucking the beans up from the tray, into the bucket, and leaving the stones behind. Is that how it works or am I way off? if that's the case, do you lose many beans to the vacuum?

  9. #59
    Life-long Learner DesigningByCoffee's Avatar
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    Quote Originally Posted by Hipsi View Post
    I can certainly imagine it would do. Now call me slow, or Queenslander (if the shoe fits...) but picture it working by sucking the beans up from the tray, into the bucket, and leaving the stones behind. Is that how it works or am I way off? if that's the case, do you lose many beans to the vacuum?
    It is a little hard to picture!
    You adjust the suck of the vac so that the beans are only just being lifted up out of the mesh tray by the low pressure in the bucket. They go up and drop into the bucket, at which point they are so far away from where the vac entry pipe is that there’s no chance of them being sucked into the vac.
    And yes, as the stones are smaller, heavier and denser they stay in the tray.

  10. #60
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    Quote Originally Posted by DesigningByCoffee View Post
    It is a little hard to picture!
    You adjust the suck of the vac so that the beans are only just being lifted up out of the mesh tray by the low pressure in the bucket. They go up and drop into the bucket, at which point they are so far away from where the vac entry pipe is that there’s no chance of them being sucked into the vac.
    And yes, as the stones are smaller, heavier and denser they stay in the tray.
    Okay, so I wasn't too far from the mark with what I was imagining then. Okay, off to find a variable vac then!

  11. #61
    Life-long Learner DesigningByCoffee's Avatar
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    If all you have is a normal vac you can just keep drilling some holes, say 6mm, in the entry pipe to the bucket. You’ll notice the bean lift-off slowing each time. It won’t take too many holes, so go slowly - you can’t really take holes away!

  12. #62
    Mal Dimal's Avatar
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    Quote Originally Posted by DesigningByCoffee View Post
    go slowly - you can’t really take holes away!
    That's what Duct Tape is for...

    Mal.
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  13. #63
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    My first find! Made me feel good, somehow...
    ST1.JPG
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  14. #64
    Senior Member GrahamK's Avatar
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    Peaberry imitating a Nasty Stone or Nasty Stone imitating a Peaberry?Bad Stone2.jpg

  15. #65
    Senior Member Yelta's Avatar
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    Behmor Coffee Roaster
    Quote Originally Posted by Dimal View Post
    That's what Duct Tape is for...

    Mal.
    As the tape on the bottom of my cooler will attest, holes drilled in wrong place, wonderful stuff is duct tape.
    DSC_0278_1000x669.jpg

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