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Thread: 6g of ground coffee left in Rocky every time

  1. #1
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    6g of ground coffee left in Rocky every time

    Hello all,
    Sorry if this subject has been discussed before but I couldn't find any specific threads dealing with it.

    I just received my Rocky doserless and Silvia today. After some setting up I'm reasonably happy with the results... BUT...
    I noticed how much ground coffee was left in the spout of the Rocky, it seemed like a lot so I decided to see how much. (I thought I might be able to redesign and 3D print a better spout.)

    After a thorough clean out (removing the spout and using a thin paintbrush to get right in, even slowly turning the whole mechanism a full turn in reverse, cleaning as I went) I found that there is about 6 grams of ground coffee left in the grinder.

    This would normally be the first thing that comes out when I use the grinder next. I don't know about you, but I really don't like the idea that my first coffee in the morning will start with 6 grams of stale grinds.

    This seems like a terrible design. Am I just supposed to dump the first 6 grams every time I use it to make sure I get a fresh grind?
    I've read that some people only add the amount of beans that they will use. Does this actually work? Does it eventually spit all the coffee out if I just wait or does it always leave 6 grams behind ruining my first shot of the day every time?

    (P.S. My idea of 3D printing a better spout would only improve it by a couple of grams, so not worth it.)
    I'm starting to regret buying this grinder already and I've only had it for a few hours. Am I worried about nothing?
    Last edited by ExpWoodsman; 25th January 2017 at 03:51 PM.

  2. #2
    Senior Member Stan's Avatar
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    You either brush it out at the end of grinding to use or it sits there until the next use. You can purge it out but you will still be getting some stale grinds in the shot. I used to brush out the MM after every use. The Fausto is a bit more difficult. It depends how fussy you want to be.
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  3. #3
    Senior Member greenman's Avatar
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    Agree with Stan, brush it out after use so that it is clean for next shot. I use a small brush on my Super Jolly and brush out as I am dosing the basket so that the 21.4g going in is what I get in my basket. It is just a matter of having a routine to follow. Rocky is a great grinder -- enjoy!!!!

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    6g of ground coffee left in Rocky every time

    I "grind" about 6grams of beans through before I do my "real" grind. This seems to flush out the stale grounds. I just live with the wastage.

    As above I have read that people use a brush to clear the shute but I am not convinced that you can clear the grounds out completely from inside the grind mechanism of the Rocky. I've taken it apart and it seems that you cannot avoid pushing stale grounds back inside the grinder while trying to use a brush to clear the shute.

  5. #5
    Senior Member Stan's Avatar
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    After you brush you run the grinder for a short burst and that throws out the grinds you pushed back in

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    I think I'll be less than the 6 grams of stale grounds. I've had similar thoughts on my mazzer.
    There are some parts of the chute and burr holders that seem to need to "fill up" with grounds after a thorough clean, like the corners. I'd recommend either just brushing out what you can easily get to in the morning... or be a gentleman and make sure you make a coffe for someone else in the household first thing in the morning!

    Enjoy there rocky

    Brett

  7. #7
    Member GunBarista's Avatar
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    Most grinders will retain some coffee ground after use.

    If it really concerns you then just have a can of compressed air handy and blow out after use.

    We used to do that at the cafe as part of our EOD cleaning routine.
    (After purging with rice.... because grinder cleaner is expensive haha)

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    Quote Originally Posted by GunBarista View Post
    If it really concerns you then just have a can of compressed air handy and blow out after use.

    We used to do that at the cafe as part of our EOD cleaning routine.
    (After purging with rice.... because grinder cleaner is expensive haha)
    Ahhhh, no. Using compressed air will blow grinds into the grinder where you don't want them.

    Purging with rice? Really? Bad advice - and is not good for your grinder.
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  9. #9
    Member GunBarista's Avatar
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    6g of ground coffee left in Rocky every time

    Quote Originally Posted by Caps View Post
    Ahhhh, no. Using compressed air will blow grinds into the grinder where you don't want them.

    Purging with rice? Really? Bad advice - and is not good for your grinder.
    I never said to blow 'into'

    and sure, rice might not be a good idea for smaller motor grinders

    But I've been cleaning out a Mythos One grinder with rice everyday for the past thousand days...

    Damn... I've been doing it to an EK43 too..

    Not to mention a 7 year old Mazzer mini, a BNZ MD74... and a 5 year old Robur... oh, and a decade old Nuova Simonelli MCD.
    All seems to be working just fine so far. But I guess they have the capacity to grind anything down without choking up. Not sure if the Rocky would have the same grunt as these guys...


    Sorry for the bad advice, I'll keep my rogue techniques to myself.
    Last edited by GunBarista; 27th January 2017 at 11:09 PM.

  10. #10
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    Quote Originally Posted by GunBarista View Post
    I never said to blow 'into'

    and sure, rice might not be a good idea for smaller motor grinders

    But I've been cleaning out a Mythos One grinder with rice everyday for the past thousand days...

    Damn... I've been doing it to an EK43 too..

    Not to mention a 7 year old Mazzer mini, a BNZ MD74... and a 5 year old Robur... oh, and a decade old Nuova Simonelli MCD.
    All seems to be working just fine so far. But I guess they have the capacity to grind anything down without choking up. Not sure if the Rocky would have the same grunt as these guys...


    Sorry for the bad advice, I'll keep my rogue techniques to myself.
    G'day GunBarista

    No need to worry - I have been using "twin water trapped, 40psi" compressed air to clean up very sensitive electronic gear plus (as a bonus) all grinders (including ones I set up in cafes) and coffee machines, automotive parts, domestic gear etc etc since the 1970's.

    Rice - this is the only coffee site I have seen that seems to problem with it. If the CSr's fears were warranted, I would have left a huge pile of broken grinders by now - including an early domestic Rancilio that I am pretty sure predated the Rocky by quite a while (it was reputedly "about 20 years old" when I bought it in 1971). It was still working perfectly at my aunt's place in 2010. Chewed up at least 20 kilo of rice over the years without a quibble - oh, and like most of the pre-60's Italian gear, the burrs were actually made out of decent steel - not like the 70s to 00s (up to 2017?) which often resembled white metal. Perhaps it is those ones that are a cause for concern?

    I would suggest you post away and let the naysaying trolls look after themselves.

    Tamp"over"It
    (with tip of hat to Java"legend"phile).
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  11. #11
    Member GunBarista's Avatar
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    6g of ground coffee left in Rocky every time

    Quote Originally Posted by TampIt View Post
    G'day GunBarista

    No need to worry - I have been using "twin water trapped, 40psi" compressed air to clean up very sensitive electronic gear plus (as a bonus) all grinders (including ones I set up in cafes) and coffee machines, automotive parts, domestic gear etc etc since the 1970's.

    Rice - this is the only coffee site I have seen that seems to problem with it. If the CSr's fears were warranted, I would have left a huge pile of broken grinders by now - including an early domestic Rancilio that I am pretty sure predated the Rocky by quite a while (it was reputedly "about 20 years old" when I bought it in 1971). It was still working perfectly at my aunt's place in 2010. Chewed up at least 20 kilo of rice over the years without a quibble - oh, and like most of the pre-60's Italian gear, the burrs were actually made out of decent steel - not like the 70s to 00s (up to 2017?) which often resembled white metal. Perhaps it is those ones that are a cause for concern?

    I would suggest you post away and let the naysaying trolls look after themselves.

    Tamp"over"It
    (with tip of hat to Java"legend"phile).
    Thank you

    For a moment I was actually doubting my position as a professional in the industry.. and almost started apologising to all clients that asked me to give their grinders a service. (..not)

    Not going to name names, but there's a huge cafe in Sydney that has compressed air guns hanging from the ceiling above their barista counters (this establishment has 3 barista counters spread out their entire dining room) and when they clean up at the end of the day the whole place sounds like a car a garage haha
    But I thought that was an amazing idea.

    Anyway, as an (ex)auto-mechanic too, I guess there are just things you don't say in public.
    (and to be honest, we don't give advice freely because we don't want to be liable if they screw things up based upon said advice)

    Thanks TampIt for the reassuring words
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  12. #12
    Senior Member Magic_Matt's Avatar
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    I wouldn't go doubting your professional expertise and practice just because of what some random on t'ol internet has to say (myself included )
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  13. #13
    Senior Member Yelta's Avatar
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    I don't use rice to clean my grinder (personal choice) my feeling is that the tiny rice grains will overload the burrs causing potential motor problems.

    I do use compressed air judiciously when cleaning up my grinder, I take care around seals etc, don't want to finish up with fines in the bearings and motor.

    The use of either rice or compressed air is pretty much a personal thing, use it, don't use it, either way the word won't come to an end.

    Quite some time ago there were discussions re fitting a Click Clack lid to the hopper of Rocky, and using it to purge the hopper, I never bothered, used the brush technique, quick and easy. Rocky Mod - Click Clack lid

    BTW, my Rocky survived 10 years of compressed air clean up when I owned it, and the last I heard was still going strong.
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  14. #14
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    Quote Originally Posted by GunBarista View Post
    Thank you

    For a moment I was actually doubting my position as a professional in the industry.. and almost started apologising to all clients that asked me to give their grinders a service. (..not)

    Not going to name names, but there's a huge cafe in Sydney that has compressed air guns hanging from the ceiling above their barista counters (this establishment has 3 barista counters spread out their entire dining room) and when they clean up at the end of the day the whole place sounds like a car a garage haha
    But I thought that was an amazing idea.

    Anyway, as an (ex)auto-mechanic too, I guess there are just things you don't say in public.
    (and to be honest, we don't give advice freely because we don't want to be liable if they screw things up based upon said advice)

    Thanks TampIt for the reassuring words
    You are very welcome.

    The cafe's "compressed air guns" are hopefully water trapped, as driving water into either electronics or poor quality steel always ends in major tears. As long as the air is dry and you blow crud OUT not IN it remains my favourite way to cleanse most items. FWIW, I do not use those compressed air cans, as too many of them also blow water. Anyway, dragging my workshop sized compressor into a cafe's outer area and blasting away is worth it for the looks of passersby - especially if I can generate a good cloud of coffee grounds. It also convinces the staff that daily maintenance is needed more than anything else I can say to them.

    (edited down Yelta)
    Quote Originally Posted by Yelta View Post

    I do use compressed air judiciously when cleaning up my grinder, I take care around seals etc, don't want to finish up with fines in the bearings and motor.

    BTW, my Rocky survived 10 years of compressed air clean up when I owned it, and the last I heard was still going strong.

    Compressed air: I guess Yelta hit on on the head with a single word "judiciously". Every bit of gear can be destroyed by the local Conans (even Lineas!). When I train baristas that is a word I use a hell of a lot.

    TampIt
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  15. #15
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    Thanks for all your replies.

    Quote Originally Posted by Yelta View Post
    fitting a Click Clack lid to the hopper of Rocky, and using it to purge the hopper... Rocky Mod - Click Clack lid
    Hmmm, sounds interesting, might give that a try, if they still make one that fits.


    Quote Originally Posted by Yelta View Post
    compressed air clean up
    I thought about doing something like that but it would get pretty messy doing it each time after making a round of coffees. The Missus might not be too happy about the extra mess in the kitchen, as if I wasn't making enough mess in the first place.

  16. #16
    Senior Member Yelta's Avatar
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    Quote Originally Posted by ExpWoodsman View Post

    I thought about doing something like that but it would get pretty messy doing it each time after making a round of coffees. The Missus might not be too happy about the extra mess in the kitchen, as if I wasn't making enough mess in the first place.
    There is no suggestion this be done after each session, and particularly not in the kitchen, this is a shed/workshop only task.
    Last edited by Yelta; 30th January 2017 at 06:39 PM.
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  17. #17
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    I'd still recommend vacuum cleaning rather than forced air cleaning...
    Safer all round.

    Mal.

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