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Thread: The $1.42 solution to stop the Mazzer Mini Doser grinder being so messy

  1. #1
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    The $1.42 solution to stop the Mazzer Mini Doser grinder being so messy

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    I bought the Mazzer Mini Doser grinder, and while I was very happy with the grind consistency, was always frustrated with how much mess it made on the bench while dosing. Ended up with a solution that I am very happy with, so just wanted to share in case it helps anyone else.

    Main steps were as follows.

    1. Go to a hardware supply store (I went to Bunnings), and purchase a piece of 25mm Clear Vinyl Joiner, clearly marked as food grade.
    2. The piece that I purchased was 7cm long which was a bit too long for what I needed. I took a sharp knife and cut it in half, so at that point I essentially had two identical 25mm x 3.5cm pieces.
    3. I removed the doser from the grinder body and inverted it, so the hole that the grinds normally fall out of into the filter basket was facing upright.
    4. With a bit of rotation and pushing, I was able to insert around 1cm of the Clear Vinyl Joiner into the hole that the grinds fall out of to secure it in place. The great thing is that the even though the hole is a weird shape (it's not round or oval, its kind of like a D shape), the Clear Vinyl Joiner basically expanded to fit it. I mean really really snug with no gaps showing, its like the Clear Vinyl Joiner was actually designed to fit the Mazzer doser that's how well it fits!
    5. Time to turn the whole thing the right way up again, and bolt the doser back on !

    The end result was that the doser now has chute for the grinds to fall down, straight into the filter basket waiting below! No mess, no waste, and feels solid ie the pipe isn't going to fall out any time soon.

    Here is a shot of the part before cutting or fitting, and also a shot of the grinder once it was fitted.

    Pipe.jpgGrinder.jpg

  2. #2
    enjoy black coffee JamesM's Avatar
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    nice. there's a similar one called the schectermatic on a USA coffee forum, except you just print it out, cut it out to make a funnel and slide it in there. works the same way. doses right in to the centre of the PF. So good!
    niclema likes this.

  3. #3
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    Yup, I'll be having a trip to B's tomorrow and try this.
    The MM is a great grinder, but a wee bit messy and wasteful.
    Well, it makes a somewhat expensive (but good) garden fertiliser!
    niclema likes this.

  4. #4
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    Interested if anyone else has tried this? Its a few months later now, and the solution has worked perfectly...
    niclema likes this.

  5. #5
    Senior Member Yelta's Avatar
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    Still using my Orphan Espresso doser funnel, a little more expensive than $1.42 but it works pretty well.
    Sort of attacking the problem from the other end.
    niclema likes this.

  6. #6
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    Quote Originally Posted by Melbroaster View Post
    Interested if anyone else has tried this? Its a few months later now, and the solution has worked perfectly...
    Just purchased a 2nd hand mazzer mini and tried your trick straight away and it worked like a charm. Only problem is inflation has got the better of me and it cost $1.49 now but it's a price worth paying to save some grinds.

    thanks for the tip

  7. #7
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    Inflation strikes again, my 25mm tube from Bunnings was about $1.75...but it works great. I'd say it reduces mess by about 75% when using the SJ doser. Great tip

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    I bought that one ...:
    Board-Trichter 58 (für 58 mm-Siebe)-Board-Trichter 58
    and it works also perfectly. maybe some one can make it in Australia, necause the post will be to expensive.

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    Quote Originally Posted by Rolf View Post
    I bought that one ...:
    Board-Trichter 58 (für 58 mm-Siebe)-Board-Trichter 58
    and it works also perfectly. maybe some one can make it in Australia, necause the post will be to expensive.
    No need....
    The 10mm high section of a used yogurt pot ( or plastic drink cup) has worked perfectly for me . !
    cost ?...$0.0
    MrJack likes this.

  10. #10
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    Quote Originally Posted by blend52 View Post
    No need....
    The 10mm high section of a used yogurt pot ( or plastic drink cup) has worked perfectly for me . !
    cost ?...$0.0
    for me it also worked perfectly, but I wanted something which looked good to the machine.

  11. #11
    Senior Member Yelta's Avatar
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    Quote Originally Posted by Rolf View Post
    for me it also worked perfectly, but I wanted something which looked good to the machine.
    Well said Rolf, my feelings exactly.

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    Quote Originally Posted by Rolf View Post
    I bought that one ...:
    Board-Trichter 58 (für 58 mm-Siebe)-Board-Trichter 58
    and it works also perfectly. maybe some one can make it in Australia, necause the post will be to expensive.
    I was looking at that shop some time ago, how were they to deal with, ship ok to au ?

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    Quote Originally Posted by amellor View Post
    I was looking at that shop some time ago, how were they to deal with, ship ok to au ?
    if I see that right, they ship it to australia.
    look:
    Liefer- und Versandkosten
    if you have a problem with the language (I think they speak and wirite english), you can ask me for translation or so.

  14. #14
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    Quote Originally Posted by amellor View Post
    I was looking at that shop some time ago, how were they to deal with, ship ok to au ?
    I have bought from them (live in Sydney)... and everything went perfectly well. Extremely happy with the two funnels I got.

  15. #15
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    Quote Originally Posted by Rolf View Post
    for me it also worked perfectly, but I wanted something which looked good to the machine.
    Hey ! ..im offended !
    my yogurt pot looks good ! .. actually its a part of a transparent drink cup, so its practically invisible !

    and anyway, the thread was about super cheap ways of preventing mess when dosing.
    .....not expensive ways to enhance the looks of the machine !

  16. #16
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    Quote Originally Posted by Melbroaster View Post
    The end result was that the doser now has chute for the grinds to fall down, straight into the filter basket waiting below! No mess, no waste, and feels solid ie the pipe isn't going to fall out any time soon.
    Hi Melbroaster, I've spent the past few days searching online on how to reduce the coffee grinds waste from my Mazzer Super Jolly doser and came across this thread. Did any of the coffee grinds stick to the inside walls of the joiner i.e. static problem?

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    There's very little static/sticking of the coffee to the vinyl joiner tube. I live in Brisbane, and it's quite humid a lot of the time, but any sticking of the grinds is pretty minimal, i.e. its never been bad enough to have to pull it out and clean it

  18. #18
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    Thanks. Looks like a trip to bunnings during work lunch time is in order

  19. #19
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    and still going strong!

  20. #20
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    Quote Originally Posted by Rolf View Post
    for me it also worked perfectly, but I wanted something which looked good to the machine.
    Post photos? Thanks

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    Im doing this fix tonight. Damn inflation has taken this fix past the $2.10 mark. I can post photos later on when I've done it.

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    Quote Originally Posted by nick88 View Post
    Im doing this fix tonight. Damn inflation has taken this fix past the $2.10 mark. I can post photos later on when I've done it.
    So I managed to find a metal part online that screws into the front of the unit from a NZ based coffee roaster.
    It's around 10 AUD plus shipping (which is minimum of 20AUD) but I ordered a couple of other bits and pieces to justify the shipping cost a little.

    Unsure on the rules as to whether I can post the name of the roaster, I guess PM me if interested.

    I'm aware there are plastic and paper solutions but I just wanted something that looked like it belonged on the machine and I'm not a very neat DIY person.

  23. #23
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    Thanks for the ideas, I was thinking of upgrading from my Mazzer Mini due to the mess but you have given it a chance to continue and keep upgraditis ar bay

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    Quote Originally Posted by rustla View Post
    So I managed to find a metal part online that screws into the front of the unit from a NZ based coffee roaster.
    It's around 10 AUD plus shipping (which is minimum of 20AUD) but I ordered a couple of other bits and pieces to justify the shipping cost a little.

    Unsure on the rules as to whether I can post the name of the roaster, I guess PM me if interested.

    I'm aware there are plastic and paper solutions but I just wanted something that looked like it belonged on the machine and I'm not a very neat DIY person.
    Thanks Rustla - ill PM you in a second. Im really struggling to get the doser off the machine at present without having to apparently force it... ive undone all the two screws at the top and removed the centre screw above the star. Hmm. Italian electronics!

  25. #25
    Senior Member Stan's Avatar
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    There should be 2 screws at the bottom of the doser which have to be removed to free it from the machine

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    Quote Originally Posted by Stan View Post
    There should be 2 screws at the bottom of the doser which have to be removed to free it from the machine
    Thanks Stan. I will have another look tonight. It was much more time consuming than I imagined.
    I managed to get the $2 pipe in the chute without removing it in the end... Im tempted to remove the doser on it. Someone on another forum had a wicked metal funnel made meaning the grounds go straight from the burr to the group handle. Im not sure if I can paste links in here though.
    Nick

  27. #27
    Senior Member Stan's Avatar
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    The screws are inside the doser, I only know this as I was looking for solutions on another forum where they showed a disassembly of the doser

  28. #28
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    This is a great solution Melbroaster, but you have to change the long screw that holds the plastic tamper if you want to include it on the grinder body. Another very similar solution is to use a 1oz plastic party shot glass (buy in bulk for next to nothing)and cut the bottom off. Instead of pushing it into the hole as per the 25mm joiner, the cup has a rim which, with a small push to alter the shape, will sit on the outside of the 'd' shaped hole and will be held permanently in place with the bottom plate and screws.

    IMG_1092.jpgIMG_1093.jpgIMG_1091.jpg

  29. #29
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    That also sounds like a nice solution, but 2 points to remember:

    1. Leaving that plastic tamper on the side of your grinder increases the chance that someone may accidentally use it...

    2. If you ever remove the shot glass from your grinder and pour a shot your feet will get wet.

    Apart from that sounds great!

  30. #30
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    I bought an OE dosing funnel from Talk Coffee (a site sponsor) when I had the same problem with a Breville Smart Grinder and an Expobar Leva group head.

    It costs a bit more, but works a treat and looks great.

  31. #31
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    I also use the Orphan Espresso dosing funnel, simple device, works a treat.

    On the other hand as I keep saying, the Mazzer ain't a messy grinder, it's the operator that creates the mess, minimal house keeping takes care of it, if you want truly clean and spotless buy a pod machine.
    Dimal likes this.

  32. #32
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    I'm using a standard jam funnel now with both the Lido and the big dog - no mess there! And at not much over $10, and stainless steel, it's a bargain …

    Screen Shot 2016-09-09 at 1.01.33 PM.png
    Dimal and Yelta like this.

  33. #33
    Senior Member Yelta's Avatar
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    Quote Originally Posted by DesigningByCoffee View Post
    I'm using a standard jam funnel now with both the Lido and the big dog - no mess there! And at not much over $10, and stainless steel, it's a bargain …

    Screen Shot 2016-09-09 at 1.01.33 PM.png
    Have to smile at this, we have a surplus of oranges this year so a few weeks back made a couple of batches of marmalade, and??? you guessed it, used the OE dosing funnel as a jam funnel, worked a treat.

    The stainless jam funnel is certainly a cheaper option and would work well, added bonus, not quite as rustic as a cut down yogurt container.
    DesigningByCoffee and Dimal like this.

  34. #34
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    Cool Here's a solution you can 3D print!

    If you have access to 3D printer, here are two designs I made and can share with you:



    The green is the new improved version, featuring a better funnel chute (but I haven't tested it as the printer I was using broke).
    The holes should line up exactly with the screws that hold the tamper on the front of the doser. So you don't have to take apart the doser's bottom plate and risk having the spring assembly pop out. Just unscrew the tamper, presumably you have a better one anyway, and use the screws to attach the chute. (you may need to file the holes, I tried to line them up but I may be a tiny bit off).

    Now how can I share the STL files? This forum doesn't allow it.
    Mini Mazzer Chute M2.stl Red - straight 2cm chute for mini Mazzer
    Mini Mazzer Chute M3.stl Green - tapered 2.5cm chute for mini Mazzer
    trentski, Jezy65, andretti and 1 others like this.

  35. #35
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    Quote Originally Posted by LindsayFowler View Post
    If you have access to 3D printer, here are two designs I made and can share with you:



    The green is the new improved version, featuring a better funnel chute (but I haven't tested it as the printer I was using broke).
    The holes should line up exactly with the screws that hold the tamper on the front of the doser. So you don't have to take apart the doser's bottom plate and risk having the spring assembly pop out. Just unscrew the tamper, presumably you have a better one anyway, and use the screws to attach the chute. (you may need to file the holes, I tried to line them up but I may be a tiny bit off).

    Now how can I share the STL files? This forum doesn't allow it.
    Mini Mazzer Chute M2.stl Red - straight 2cm chute for mini Mazzer
    Mini Mazzer Chute M3.stl Green - tapered 2.5cm chute for mini Mazzer
    This is an awesome idea. Is there somewhere I can download these designs?

  36. #36
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    The new link is here:
    https://www.thingiverse.com/thing:2027466

    Thingiverse was just a better place to put my 3D designs... sorry for the dead link!



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