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Thread: List of all Mazzer Mini Doser modifications available

  1. #1
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    Lightbulb List of all Mazzer Mini Doser modifications available

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    I'm hesitating between buying a Mazzer Mini Doser or a Compak K3 Touch. I would prefer the Mazzer but can't convince myself that I won't be put off by its doser usage.

    Could everyone that read this post and that want to contribute post all their Mazzer Mini Doser mods here (with photos would be great too ). This will be useful also to others that are considering or that own already the mini and wants to know all the latest mods available. I will update this post with all the mods as they come so it is easy for anyone to find them all in one central location.

    Thanks in advance for sharing your inventions, ideas and knowledge!

    EDIT 1:


    1. Doser funnel / Elvinator: To funnel the ground into the portafilter without making a mess
    2. Doser sweeper: To sweep the doser chamber to have very little ground left after dosing
    3. Doserless mod
    4. Making the doser quiet with a piece of rubber
    5. Inverted cup to limit the ground staying in the doser
    Last edited by SunnyCoffee2; 30th May 2018 at 09:33 AM. Reason: Added new mods

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    Hi SunnyCoffee

    Why are you only looking at the Mazzer Mini doser and then modding or a Compak K3 T?

    guessing you want on demand grinder and looking for low retention from your post.

    If price is an issue have you though of second hand from the marketplace section?

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    Quote Originally Posted by Mb21 View Post
    Hi SunnyCoffee

    Why are you only looking at the Mazzer Mini doser and then modding or a Compak K3 T?

    guessing you want on demand grinder and looking for low retention from your post.

    If price is an issue have you though of second hand from the marketplace section?
    I can get the Compak K3 T for $500 and the Mazzer mini for $650. I prefer Mazzer as a brand and feel. But would prefer a timed doserless grinder for the low retention and ease of use. The only reason that make me hesitate for the K3 is that it seems to be clumping more than the Mazzer from the videos I've seen on Youtube. If someone with experience with both side to side could tell me they both are clumping the same I would probably go with the K3.

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    I've got both the mazzer mini (doser) and K3 push. I've been finding I mostly use the K3, mainly because it is less messy. I really don't notice a difference in the cup.

    I have bought a doserless funnel for my mini, along with 3d printing a portafilter holder fork https://www.thingiverse.com/thing:1872280 (search thingiverse for other bits you can print too. My local library has a 3d printer and I printed that fork for about $3 or so, bargain). All this stuffing around and I still use the K3 most of the time

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    Senior Member Erimus's Avatar
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    If you're concerned about retention and clumping, you should consider the Sette 270. It has very good reviews on here, nice and fluffy, virtually no retention and a good price.

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    Senior Member Yelta's Avatar
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    Quote Originally Posted by SunnyCoffee2 View Post
    I'm hesitating between buying a Mazzer Mini Doser or a Compak K3 Touch. I would prefer the Mazzer but can't convince myself that I won't be put off by its doser usage.

    Could everyone that read this post and that want to contribute post all their Mazzer Mini Doser mods here (with photos would be great too ). This will be useful also to others that are considering or that own already the mini and wants to know all the latest mods available. I will update this post with all the mods as they come so it is easy for anyone to find them all in one central location.

    Thanks in advance for sharing your inventions, ideas and knowledge!

    EDIT 1:


    1. Doser funnel / Elvinator: To funnel the ground into the portafilter without making a mess
    2. Doser sweeper: To sweep the doser chamber to have very little ground left after dosing
    3. Doserless mod
    4. Making the doser quiet with a piece of rubber
    5. Inverted cup to limit the ground staying in the doser
    Morning Sunny, welcome to Coffee Snobs.

    I have a Mini, have replaced the doser with an aftermarket Mini E type hopper, it has made it a more functional machine, a very good grinder, only issue, a bit on the slow side, no big deal to me, others do find it a problem.

    The Mini is certainly built to last.

    Having said the above I suspect if I were in the market for a grinder now I would certainly be looking closely at the Compak or Macap range, the K3 Touch certainly looks to be good value for money.

    When I bought the mini (almost 10 years ago) the other grinders were not on offer.

  7. #7
    Senior Member simonsk8r's Avatar
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    Yeah both seem great grinders, the Mazzer Mini has alot of great reviews, and yeah whilst slow as mentioned, it seems like it still does what it needs to do really well.

    I don't have a Mini, but I have a Compak K3 Touch Advanced, and I love it. In terms of clumping, it truly depends on the coffee and also how dark it was roasted (darker roasts tend to clump more I've found). So sure there is a little clumping, but I've honestly never found it to be an issue, and hasn't seemed to affect extractions if you actively distribute (moving the basket around while dosing rather than keeping it central). There is the odd occasion of when dosing for a clump to roll off out of the basket but it's pretty minimal mess overall.

    And in terms of retention not alot, I think in the chute itself it always seems to come to 1.9-2g, which when I'm dosing I stop the dose about 2g before my target and just chopstick the rest out, easy. Of course a little retention in the burrs etc but not a great amount.

    I'm still unconvinced about clumping and whether it really truly matters.. as Matt Perger said once, a nice firm tamp pretty much takes of clumps anyway. But I'd love to look into whether clumps are still a legitimate factor in the extraction.. just wouldn't know what to look for study-wise haha

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    Quote Originally Posted by simonsk8r View Post
    Yeah both seem great grinders, the Mazzer Mini has alot of great reviews, and yeah whilst slow as mentioned, it seems like it still does what it needs to do really well.

    I don't have a Mini, but I have a Compak K3 Touch Advanced, and I love it. In terms of clumping, it truly depends on the coffee and also how dark it was roasted (darker roasts tend to clump more I've found). So sure there is a little clumping, but I've honestly never found it to be an issue, and hasn't seemed to affect extractions if you actively distribute (moving the basket around while dosing rather than keeping it central). There is the odd occasion of when dosing for a clump to roll off out of the basket but it's pretty minimal mess overall.

    And in terms of retention not alot, I think in the chute itself it always seems to come to 1.9-2g, which when I'm dosing I stop the dose about 2g before my target and just chopstick the rest out, easy. Of course a little retention in the burrs etc but not a great amount.

    I'm still unconvinced about clumping and whether it really truly matters.. as Matt Perger said once, a nice firm tamp pretty much takes of clumps anyway. But I'd love to look into whether clumps are still a legitimate factor in the extraction.. just wouldn't know what to look for study-wise haha
    I don't think it matters much. It will definitely occur more if you roast the coffee to the point where oils appear on the bean, it acts like glue.

    The other thing is how the grind exits the machine, anywhere there are pressure points, it con conglomerate. Some grinders use a mesh in the exit chute to break these up. People these days often don't use dosing hoppers which used to nicely break up clumps as well.

    I also think if the grind is heated by the action of the motor, it can encourage clumping.

    I suppose that there are a variety of factors including humidity that can affect clumping but I rather doubt that it will make much difference in the cup, there are more important factors at play.
    simonsk8r likes this.

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    Question

    Quote Originally Posted by simonsk8r View Post
    Yeah both seem great grinders, the Mazzer Mini has alot of great reviews, and yeah whilst slow as mentioned, it seems like it still does what it needs to do really well.

    I don't have a Mini, but I have a Compak K3 Touch Advanced, and I love it. In terms of clumping, it truly depends on the coffee and also how dark it was roasted (darker roasts tend to clump more I've found). So sure there is a little clumping, but I've honestly never found it to be an issue, and hasn't seemed to affect extractions if you actively distribute (moving the basket around while dosing rather than keeping it central). There is the odd occasion of when dosing for a clump to roll off out of the basket but it's pretty minimal mess overall.

    And in terms of retention not alot, I think in the chute itself it always seems to come to 1.9-2g, which when I'm dosing I stop the dose about 2g before my target and just chopstick the rest out, easy. Of course a little retention in the burrs etc but not a great amount.

    I'm still unconvinced about clumping and whether it really truly matters.. as Matt Perger said once, a nice firm tamp pretty much takes of clumps anyway. But I'd love to look into whether clumps are still a legitimate factor in the extraction.. just wouldn't know what to look for study-wise haha
    Agrajag and simonsk8r, in older review (few years back) of the K3, many are saying that the stepless adjustment wheel was loose by about 0.3mm creating some inconsistencies. Do you feel this has been sorted out in the newer version of the K3?

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    Quote Originally Posted by SunnyCoffee2 View Post
    Agrajag and simonsk8r, in older review (few years back) of the K3, many are saying that the stepless adjustment wheel was loose by about 0.3mm creating some inconsistencies. Do you feel this has been sorted out in the newer version of the K3?
    I'm not entirely sure what the looseness you're referring to means, but yes the part that makes the adjustment is slightly loose, as in you can turn it a bit before it "grabs" and turns the burrs. This is really a non-issue though, the adjustments I make are always relative to where it currently is, I don't look at the numbers on the dial, they don't really mean much. If you are grinding more than one type of bean and using the numbers to refer back to where you are, perhaps this could be an issue but I'm pretty sure you could work out in which direction you're moving it and get it back to where it was exactly.

    I can make a video of the looseness I'm referring to if you like so you can see what I mean if I haven't explained it well - but really I don't think it's a problem.

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    Made a quick video to show you what I'm talking about (sorry for the mess, just finished doing some coffees and haven't cleaned up yet!)



    Edit: just to be clear, the movement is only in the turning bit (collar?), not the actual burrs. Once you've set it in place, the burrs do not move, you do not get any inconsistencies that way. You can feel them moving when making adjustments.

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    Quote Originally Posted by Agrajag View Post
    Made a quick video to show you what I'm talking about (sorry for the mess, just finished doing some coffees and haven't cleaned up yet!)



    Edit: just to be clear, the movement is only in the turning bit (collar?), not the actual burrs. Once you've set it in place, the burrs do not move, you do not get any inconsistencies that way. You can feel them moving when making adjustments.
    Thanks so much for this video Agrajag! It really help me understand how it works. I was scared the burrs could move once they are set but I can clearly see that it takes some pressure to get them moving. It looks like the collar is not fully stuck to the burrs to allow the little play you show. I wonder why they made it this way. Also just out off curiosity, why would you keep two grinder?

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    Senior Member simonsk8r's Avatar
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    Quote Originally Posted by SunnyCoffee2 View Post
    Agrajag and simonsk8r, in older review (few years back) of the K3, many are saying that the stepless adjustment wheel was loose by about 0.3mm creating some inconsistencies. Do you feel this has been sorted out in the newer version of the K3?
    Yeah like Agrajag said, it's only the collar that has a slight play, but the burr positioning is locked in place. When you change grind, you move the adjustment collar as far as it swivels and only THEN can you change the distance between burrs. Hard to explain, but you move it so it clicks into place. Then you can adjust the actual burrs.

    So the left-to-right play is a non-issue (mine is a 2014 model so not sure if any updates), but I was more concerned with the up-to-down play when you place pressure on the collar/top burr. But I have a feeling it still locks in place (just don't lean on the grinder hehe), and I've been told this is the case.

    My inconsistency issues were solved when I got new burrs and it had nothing to do with the play in the collar.

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    Quote Originally Posted by SunnyCoffee2 View Post
    Thanks so much for this video Agrajag! It really help me understand how it works. I was scared the burrs could move once they are set but I can clearly see that it takes some pressure to get them moving. It looks like the collar is not fully stuck to the burrs to allow the little play you show. I wonder why they made it this way. Also just out off curiosity, why would you keep two grinder?
    Yeah that's it. And yeah not too sure why they made it like that, but it's actually easy enough to figure what setting you're at anyway, just decide which way to lock the adjustment collar (I rotate mine to the right, or clockwise), and there's your number (I cut out a little arrow to point easier to the position as it can be a little tricky to note what number you're on).

    And yeah like said before the numbers don't mean anything but are just relative spots. I only make slight adjustments relative to what's needed. If I'm going back to a coffee I've used prior, I'll have written down the rough number position to go to too.

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    Quote Originally Posted by SunnyCoffee2 View Post
    I was scared the burrs could move once they are set but I can clearly see that it takes some pressure to get them moving.
    Exactly right, there is some force involved in moving it

    Quote Originally Posted by SunnyCoffee2 View Post
    Also just out off curiosity, why would you keep two grinder?
    Good question, one I've been asking myself lately. I originally got 2 because I was roasting different beans (+ decaf) and it was convenient. Nowadays however I mostly only ever have one batch going at a time, so I'm tempted to either sell one, or both and upgrade. What to upgrade to though, I don't know...

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    Thanks all for all your inputs! Just found a brand new Compak K3 Touch Advanced for $498 and decided to go with it



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