Delonghi KG79 - KG89 FINER GRINDING Espresso Hack I How to Modify Coffee Grinder 

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Dear Robert, thank you so much for this detailed & beautiful review :) Cheers!

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Thank you for your feedback :) You're welcome! Cheers...

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Grazie per il tuo commento!

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Hi, how u know the burr is touching each other?

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Which model do you have?

Have you had problems with the grinder after this mod?

@@iikkakonola it is still working fine

They must have quite a big factory tolerance, mine took just 3 clicks before the burrs started touching. I suggest trying it before complete reassembly and fine tuning the setting. Be careful to the exposed electronics though.

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How fine is the grind after the mod?

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Is your machine still working fine?

@@sanaraheem5000 yup. Works perfectly fine!

@@dinosidhu thats great. I guess i will try then too.. Since i can taste difference in commercial grind and this machine's grind even with pressurized portafilter

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Cheers!

Thank you for your feedback!

Is your machine still ok after the change.. I am just scared to make the change since i cant buy it again from where i live. will have to import from other country if i break it

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Which model do you have? Have to turned it 90° or more? Thanks!

I don't have one of these, but I was planning on getting one. Is it not possible to simply overturn the adjustment dial once the knob has been removed? Instead of opening up the whole machine. Just asking if that's an option, trying to minimise the risk of me breaking a new grinder

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Yes, that's right...

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How many click do u move from finest setting?

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Also I moved my cog only about 45 degrees counter clockwise (my cheap coffe machine do not like too fine coffe XD)

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You're welcome! Enjoy :)

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How does it sound when it touch each other? My dose was 15 gram dark roast at finest setting after mod yet it still way to fast on unpressurized basket (30g at only 10-15 s from first drip on delonghi dedica 51mm)

@@nhs.14 it sounds like metal grinding on metal. It's a lower pitch sound like rocks in a washing machine might sound. The usual sound seems higher pitch and the grinder sounds like it is spinning faster. I hope that helps? I also found l has to tamp very hard. To slow extraction you can turn the steam wand dial a little to release some steam/water. You can practice this with just water and no coffee. You will need to put a container under the steam wand to catch the water.

Hi R J what machine do you use in your setup?

No. But you can grind finer :)

Hey is your grinder still working fine?

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You're welcome! Thank you for your feedback!

Hi Ralph, at what grind setting are you at? i did only 4 clicks as well but the video seems to have done 6 clicks. I have trouble listening for the burr grinding sound since the whole grinder is vibrating loudly so i am somewhere between medium and fine.

@@JC-sy8fh when I adjusted by 4 clicks I was then using the finest setting. This seemed to work ok for a while but then I had to do re-adjust to grind finer. I think possibly this machine was set at that conservative limit for a reason. I have since bought an Iberital mc2 which is on a whole other level with very fine adjustment and grinds much ore consistently.

@@ralphgrimwood690 thank you for the detailed reply! I am now at finest setting but only still able to pull lungo shots. Should i try to open it again and adjust 1-2 clicks more?

@@JC-sy8fh yeah I'd give it a couple more and see how you go.

Cheers!

What do you mean by 50°? He adjusted by 45° and that means you did adjust it for even finer grind.

@@sam-nariman6236 his caption said 90 degrees would be more than enough, so I only went 50 degrees and it worked fine. And yes looks like he didn't go very far either, so not sure why he mentioned 90.

I see, I did also 90 degrees and yes it's too much, I think I damaged my newly bought grinder. yeah you're right 50 degrees is enough. @@fgzy123

Thanks!

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You're welcome...

You're welcome 😊

You're welcome! The second one is safer of course. Once you find the spot, you can leave it there & enjoy :) Cheers!

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Grazie :)

Transaltion - when I found your video, there is no information on the blog on how to modify it so that it was fine enough to get an espresso, everyone says they had it well crap 😜 after watching the video I turned 90 degrees made a huge difference but I was still not happy, so I set it back to 180 degrees and now it is perfect 😎😁 Many thanks for such a video congratulations you are great, my grinder has regained new life and the jackdaw is divine hehe

@@LDWilliams Thank you for translation :) Cheers!

Thank you for your feedback!

Cześć Irku Zdybel, w którym miejscu masz pokrętło mielenia po zmianie o 180°? Możesz podesłać mi zdjecie lub określić? Czy w trakcie mielenia na pusto masz taki dźwięk wyjący? Po ustawieniu na 90° u mnie również prawie nie zauważyłem różnicy. Zastanawiam sie czy faktycznie po ustawieniu na 180° kawa jest miałka odpowiednio, tak ze czas ekstrakcji wydłuża sie. Będę wdzięczny za pomoc :).

Thank you for your feedback! Cheers!

Lots of videos go fast. People pause and then play in each step. It's tiring. So we wanted o make the video in real-time :)

@@4ErMedia It worked for me. I didn't do the hack. I just needed how to take it apart to put on a new cable. I was surprised how dirty it as inside with old coffee grounds!

I thought this was a refreshing way of showing it.

@@4ErMedia it's the perfect way, I was able to just click play and go through whole process without hitting pause

It is not hard. Everybody can do it :)

@@4ErMedia thanks for the encouragement. But i'm definitely gonna break it...

Gringing light roasts as fine as the mod will allow needs a lot of torque. Only guessing but I bet Delonghi used a motor not really rated for this and as such this mod will make the grinder burn out faster than without. Otherwise they could sell this with the mod for twice the price.

You're welcome

Cheers!

Thank you for your comment! Cheers!

You're welcome! Yes, you probably can find that "one more click" for a finer grinding with this hack. Music is "Ticker/Silent Partner" :)

@@4ErMedia thank you very much👍

Hi, how do you know that the blades are touching each other?

@@wongyx3260 when you rotate the top blade manually, it stucks.

Thank you! After tuning for "finer grinding", you can do "coarser grinding" but the most coarse grinding options will be gone...

You're welcome! These models are not so good at "keeping it clean" :) There is no way we know to prevent that from happening...

@@4ErMedia That's what I was afraid of, thank you very much for responding and happy new year!

@@T0berius Thank you! Cheers!

@@T0berius And we wish you a happy new year too! :)

Hi' You're welcome :) It is explained at the end of our video. You turn the grinder on with no coffee beans in it. Listen to the sound. Click one by one to the finer. When you hear the touching sound, turn one click to the opposite side & make sure that the parts are not touching each other. That is your finest setting & never go finer than this. Cheers!

You are welcome!

Yes. The knob will be pointing somewhere between middle and finest, when tuned to finest. The max. coarsed setting will grind finer than before. So after applying this, you will loose some of the max coarsed grinding mode.

It is very easy. Just make sure that there is no coffee beans in the grinder. It should be empty. Then, when you turn the knob 180 degrees (to the opposite side of "fine"), you will hear the clean sound. One by one, turn it to the "finer grinding" direction. At one point, the sound will change. Then, move it one click far from that point & hear the clean sound again. That's the finest grinding point. We hope this helps.

Is it possible to visually inspect the burrs for damage?

Rodrigo Vazquez You can. But also you should hear the clean sound when the grinder is turned on & empty.

Is it okay to turn the gear further than the shown? The finest setting seems still not fine enough...also the static is really bad with this grinder.Is there a way around it? Thanks

@@4ErMedia Hi there. By "far from that point" do you mean to turn it towards the coarser option or finer? I think you meant coarser because if finer, it would generate more noise. Can you please confirm?

Hi Alireza! There is no problem for the coarser side. But for the fine side, first you should empty the coffee beans and then be sure there is no touching between the grinding parts. Find the finest point & never turn the knob further. That's it :)

@@4ErMedia Thanx 4 your quick reply & Special care

@@alirezasaboktakin8506 You are welcome, always!

You placed the gear on the wrong side. Open it and reinstate the stopper should be pointing fully on the left side

Not exactly. You should try and find the equivalent setting again.

After the modification, the finest setting on the body shouldn't be used. The "clean sound" position will be the new "finest".

We haven't tried that yet :)

You probably have to "choke" the machine first with a very fine grinding.. and then increase the grinding until the water starts flowing back slow enough to get the 30g of espresso in 23~28 seconds (depends on your taste). I managed to do this with a hand grinder (copy of hario skerton), but I can only do it with 12g of coffee (I prefer a 1:3 ratio) because for 14 or 18 grams the next setting in the hand grinder is too coarse and the water flows too fast (I need to modify that one too). I have a KG89 which I moded I while a go, but I only turned the little wheel 5 "teeth" I believe (I watched another video), which is really not enough for unpressurized portafilter. I was scared of what would happen If I went beyond that, but I might try again thanks to this video.

@@zonys hi did your try turning the teeth some more? What grind setting are you at? I did 4 clicks adjustment and at finest setting, not fine enough for bottomless portafilter.

@@JC-sy8fh Hi! I modified mine in two ways. First, by this method, and then by modifying that top part of the grinder that you can take out without having to open the machine (that long three legged thing inside the chamber with the coffee beans that you can turn, unlock and take out). Unfortunately I couldn't find the video. It was in German I think. Basically, you take that part out, and bellow where that teethed metal burr is, you can see that there are 3 screws (each corresponds to one of the three legs it has). You unscrew them... and the metal thing will detach.. What I did was cut 3 rings of acetate sheets that would fit below that metal part that just came out... you have to make the holes for the screws to go through too.. (it is quite a detailed job) What this does is to make that burr metal part lower than the screws. The problem was that no matter how much you adjust the dial, the screws will always touch first (the gap is almost imperceptible but it is there). After this I could turn the dial two more times until I could hear them touch when grinding (the sound when they touch is very distinct, no a very good one!). I put the beans inside, and well... I turned it once more after a few trials (3 extra more after this hack). And I've been using it like that since a year or more (two cups of coffee a day). It's a bit difficult to explain it in text. If you have any doubts, ask me again. I'll try to look for that video.

Thanks for the info!

Have you tried switching to an unpressurised basket in the portafilter? I'm about to try this and apparently it transforms the EC685's ability to make good espresso

Without beans. Cheers!

Yes it would. Channeling is caused by either a un-even/coarse grind or bad tamping. Either way, its worth a shot

Thank you for your feedback!

Maybe. But you should be very careful. The parts shouldn't touch each other. And still, it may not work, as the "default finest" may be the "real finest" in your grinder :)

It is possible but you have to try (maybe several times) to find that sweet-spot

I have also Kg 89 model, I also think as you. I want try 45 degree turning. Have you tried it already? I have bottomless portofilter and it holds only 18-19 gr aproximately. Can i get 25 second shot?

Hi. You get finer and standart. But not the courser at its max.

@@4ErMedia thank you so much. This video does help me a lot