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Thread: Compak K-10 Conical grinder is OK for home use

  1. #1
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    Compak K-10 Conical grinder is OK for home use

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hello everybody,

    I have been lurking here for quite a while but had not posted anything before. Might as well jump in now. *[smiley=2vrolijk_08.gif]

    A couple of weeks ago, I managed to *get my hot little paws on a demo Compak K-10 grinder. *[smiley=grin.gif]

    I remember reading elsewhere in this website someone who actually bought one and then returned it a couple of weeks later as he felt it retained too much grind in the chute. I was concerned about this but at the price, I decided I could live with this problem.

    Happily, it turned out that there is a really simple solution at hand and it results in virtually no leftover grinds *[smiley=vrolijk_26.gif]

    All you need is the good old disposable bamboo chopsticks freely available in any Japanese takeaway. Get the ones where the stuck ends taper to a wedge.

    Here is what you do:

    1) After grinding, let the grinder run for a few more seconds - centrifugal force will push all remaining grinds into the chute.
    2) Turn off the grinder and let it come to a stop.
    3) Use the tapered end of the chopstick to gently push all the grinds out of the chute into the doser.
    4) Voila! No more than 5 seconds work and no more stuck grinds.

    I had been using the above method to clear out my Rocky grinders chute for the past two years and I never had any problems with stale grinds. If you happen to stick the chopstick in before the grinder has completely stopped, no damage is done as the chopstick is quite soft. You might get some ground bamboo in your coffee but this only adds character to your shot *[smiley=wink.gif]

    So there you go - dont be put off getting a commercial grinder to use at home. I think this grind retention thing is a bit of a storm in a teacup. In fact, I dont even find it to be a problem because the chopstick solution is so simple and effective.

    You can use this solution on nearly all grinders with dosers - any model where the chute is accessible. I dont think it will work on doserless ones unless you can find some bendy bamboo chopsticks *[smiley=rolleyes.gif]

    If there is enough interest, I can try to post some pictures on how this is done.

  2. #2
    Sleep is overrated Thundergod's Avatar
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    Re: Compak K-10 Conical grinder is OK for home use

    Welcome to Coffee Snobs eran.

    I use a paint brush.
    The type artists use not house painters.
    Paint brush bristles are softer than bamboo.

  3. #3
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    Re: Compak K-10 Conical grinder is OK for home use

    Thank you for your welcome.

    I did use a brush at first but found that I kept pushing the grinds back into the grinder. Maybe it is just my being ham-fisted but I certainly find that I have a lot more control with the chopsticks. Oh, well. making coffee is supposed to be an art form anyway. I guess this also extends to cleaning out stuck grinds *[smiley=huh.gif]

  4. #4
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    Re: Compak K-10 Conical grinder is OK for home use

    Hi Eran,

    The post you recall about grind retaining was likely mine from some time back. That was the first model of the Compak, and they have since (I believe in part due to feedback from myself and others on the chute design via their local distributor) redesigned the chute to remove the problem.

    The difference between the old and new models is easy to see (on the doserless models, anyway), as the old had a completely horizontal rectangular tube emerging from side of the grinder body, whereas the new one it slopes down at more than 45 degrees, and I believe is open at the top as well (so a U shaped channel rather than a tube). Yours sounds like the new design.

    Theyre great grinders, and if the chute design had been as it is today when I bought mine I would no doubt still have it!

    Cheers,

    Dennis

  5. #5
    Super Moderator Javaphile's Avatar
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    Re: Compak K-10 Conical grinder is OK for home use

    Quote Originally Posted by eran48 link=1188905934/0#2 date=1188951253
    I did use a brush at first but found that I kept pushing the grinds back into the grinder. Maybe it is just my being ham-fisted but I certainly find that I have a lot more control with the chopsticks. Oh, well. making coffee is supposed to be an art form anyway. I guess this also extends to cleaning out stuck grinds [smiley=huh.gif]
    Just as Thundergod does I also use an artists brush. I use the wood end to get out the initial mass of grounds and then use the brush end to get out the last of them. :)


    Java "Doing it with both ends" phile

  6. #6
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    Re: Compak K-10 Conical grinder is OK for home use

    Let me congratulate you on your home grinder. Theres not much room for improvement with such a beast. It sounds like you managed to pick it up for a decent price as well... Gotta love a bargain.

    Happy grinding.

    Cheers,

    Mark.

  7. #7
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    Re: Compak K-10 Conical grinder is OK for home use

    Yep, artists brush here. Then I briefly turn on the grinder again, and it ejects any final grinds.

    Gary

  8. #8
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    Re: Compak K-10 Conical grinder is OK for home use

    Thats funny Javaphile *[smiley=grin.gif]

    Ahhh! Its amazing how I learn something new everyday at Coffee Snobs - I guess this is why I keep coming back! * [smiley=thumbsup.gif]

    I have to admit I didnt try the other end of a brush - the thought of potentially brewing bits of paint didnt sound too appealing. Bamboo, I can drink, paint is another cup of, err, tea altogether. * [smiley=tongue.gif]

    Hello Dennis, Because it was a demo model, it had all its front bits stripped off except for a doser spout. Nake PFs and now naked grinders. The coffee machines are getting sexier all the time *[smiley=evil.gif]

    When I remove the spout, I can see a rectangular hole where the grinds exit. This chute is horizontal and is approx 1.5 cm in length and leads directly to the burrs - I can actually see spinning bits through the chute. I guess I must have the older model. At 40% off, I cant really complain.

    Ill see if I can get me some bamboo artist brushes and try out Javaphiles both ends technique *[smiley=rolleyes.gif]

  9. #9
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    Re: Compak K-10 Conical grinder is OK for home use


    I think Dennis was referring to the old K-3 touch, not the monster K-10 conical, a variant of which is used in the WBC. So Im not sure if the latest K-10s have any change in the exit chute ( 2MCM might know this).

    40% off would put it in the Mazzer Super Jolly price range... that is one hell of a bargain!!!!

    Cheers,

    Mark.

  10. #10
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    Re: Compak K-10 Conical grinder is OK for home use

    E48

    I have a K8 and it too has the long square chute and yes it holds a lot of grinds.
    I used to wait until the grinder stopped spinning, and then flick the excess into the doser and continue, but found it takes too long [impatient]
    I dont use the hopper, and instead use the rubber suction cup thingy from a plumbers plunger on the top.
    When the grind is done, I give the plunger a whack and it completely clears out the chute and the chamber as well.

    If you dont use the hopper, Id give this a go.

  11. #11
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    Re: Compak K-10 Conical grinder is OK for home use

    Hey reubster, can you post some photos of you using the toilet plunger to clear your grinder? Im sure it will become a classic here *[smiley=grin.gif]

    I can just picture the toilet plunger, complete with its handle, sitting on top of your grinder. Im sure it makes a fantastic conversation starter....

    Using a toilet plunger may be beyond my better halfs WAF (wife acceptance factor).

    Plus, my mother in law might mistakenly borrow it and actually use it in the loo *[smiley=shocked.gif]

    On a more serious note, I think thats a great idea. Ill definitely give it a go. Do you just remove the hopper and pour the beans into the opening? Or do you use a funnel of some sort (Ive read of someone using a yoghurt tub with the bottom removed)?




  12. #12
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    Re: Compak K-10 Conical grinder is OK for home use

    I use a chinese tea cup and hold it under the exit sput of my doser. I place the PF over it, invert the cup , smooth away excess grinds and then tamp. For the thorart and doser chamber, i vac it out if it has letover stale grinds

  13. #13
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    Re: Compak K-10 Conical grinder is OK for home use

    E48

    DoH!
    I shouldve mentioned I removed the handle....LOVL!

    The plunger is a domestic *version I bought from Big-W for under $5.00.
    The colour and diameter is a perfect match for the compak adjustment collar.
    When you "blast", the grinds hit the top front of the doser with some force, so it makes a pretty good seal.
    Best of all it completely clears out the grind chamber too.

    I found the hopper too large and it made it difficult to judge a correct dose.
    When removed, *if you look down the throat [in the K8] you can see where the bottom of the plastic collar meets the brass stator.
    This is the near perfect *fill mark for a double shot, so I always run hopperless, and fill to that point for each shot.

    My SOH has yet to notice the addition of the plunger top, so it must be pretty subtle.

    For those interested, to the left of the grinder is a $10 bin we use for kitchen scraps/compost. Ive fitted *a length of timber dowel to the removable plastic insert, so it double as a knock box too.


  14. #14
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    Re: Compak K-10 Conical grinder is OK for home use

    Great photo reubster. Your grinder looks like it is wearing one of those funny skull caps - very cool *[smiley=grin.gif]

    The Compak with the hopper attached is simply huge - it even makes the Expobar Minore look small. Its about half the size with the hopper removed and looks far better *- in a home environment anyway. It certainly doesnt look out of place next to the Silvia.

    I am definitely off to K-Mart to look for some mini plungers and artist brushes this weekend *[smiley=thumbsup.gif]



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