dfk41 Does not sound right, unless it is down to the burrs being new. Mine grinds at the same rate from start to finish. I do not think the flow control disc adds anything to the time spent grinding. This was tested by our host ages ago and I am sure that was the conclusion.

DavecUK Problem solved. Thank-both. The nut was a tad loose. It must have loosened during my initial tests, as the grind time got progressively slower. I tightened the nut, and now the bean grind is consistent and constant, with 16.5 grams of fine grind ground in 35 seconds. Does that speed sound about right?

Also, interestingly the static grounds cling has dissipated. I’m wondering whether the slippage of either the nut or the disk (due to insufficient nut tightness) was generating static.

And while this may or may not have had any impact on the above, I was not using frozen beans.

Thanks all. What a Forum!!🙂

      The grind seems a tad slow, usually it’s around 20 - 25s for 18g of Espresso grind, if memory serves me right

      But with no idea of the coffee, naked portafilter shot videos/times, videos of it grinding a dose, voltage….I really can’t comment more….

      I’ve also never ground freezer temp -19C coffee, so perhaps that’s normal?

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        tompoland (Personally, I’ve found a lot of issues can be fixed by checking the nut that holds the portafilter.😀)

        Same with driving, but with the nut behind the steering wheel ;)

          DavecUK The grind seems a tad slow, usually it’s around 20 - 25s for 18g of Espresso grind, if memory serves me right

          Hi Dave. Thanks for offering to help.

          The 16.5g frozen decaf bean grind ran 30 seconds to empty the hopper and then another 15 seconds (total 45) until the last of the grounds flowed out (with no remaining retention). It was a medium dark decaf of unknown origin, that was frozen after 2 weeks rest. The grind setting was 4.75. Here is a link to the grind video: NZ Grind. It should become active in 1 hour.

          My shot was 16.5 in, 24.3 out. 10 BAR. 95C. 8 seconds bloom pre-infusion. I didn’t see the shot time, but the flow seemed neither slow or fast. I am guessing that it ran about 30 seconds. I accidentally deleted the shot video, and its a pain to recover. The shot was balanced but didn’t have significant body/mouthfeel, strength, flavour or length. As per my recent post, I think the coffee is stale.

          Irrespectively the grind should not take so long.

          Thoughts? Possible solutions?

          Thanks Dave!

              Just food for thought, are niche sending out a batch of NFC discs with smaller holes than original, my niche is one of the originals without NFC disc, I had been using my own 3d printed one, about 6 months ago I decided to buy an original one and was not that impressed, found the flow was much slower than my printed one and grinding times and grind consistency would vary from shot to shot, in the end went back to my 3d printed one.

                ken0062 ust food for thought, are niche sending out a batch of NFC discs with smaller holes than original, my niche is one of the originals without NFC disc, I had been using my own 3d printed one, about 6 months ago I decided to buy an original one and was not that impressed, found the flow was much slower than my printed one and grinding times and grind consistency would vary from shot to shot, in the end went back to my 3d printed one.

                Thanks for sharing that experience, ken0062. And yes, aside from s l o w grind speed, I’ve also been experiencing unexplainable shot time variation, from shot to shot with the same bean, recipe, etc. Ofcourse, this could be the operator 🤪 (me).

                Might you email me the 3D printing file, the 3D printer model name/# and whatever else I’d need to send this to my local 3D printing shop. Email address is Julian Colman with a dot in between at gmail dot com.

                My disk is brand new (came with my brand new NZ). It’s worth a test, just for the heck if it.

                    This is a brand new grinder? Not second hand?

                    The burrs need seasoning you WILL get varying results, plus the fact your chucking decaf at it and grinding it super fine.

                    Put a normal medium bean through it and it will grinder perfectly fine.

                    Decent De1pro v1.45 - Niche Duo - Niche Zero - Decent is the best machine ever made -

                    What voltage are you? Are you in the uk

                    Decent De1pro v1.45 - Niche Duo - Niche Zero - Decent is the best machine ever made -

                      JHCCoffee The 16.5g frozen decaf bean grind ran 30 seconds to empty the hopper and then another 15 seconds (total 45)

                      For what’s worth…

                      I just tested this morning, in the UK: This was with a Colombian Natural (Pedraza from Smith Street, UK). Niche Zero set on mark 14. 18.30g in, and all out in 18 seconds, producing a beverage of 39g in 33 seconds. However, this is without the flow control disk.

                        you’re 10 steps coarser though haha

                        Decent De1pro v1.45 - Niche Duo - Niche Zero - Decent is the best machine ever made -

                          Cuprajake Good point! I missed that key part of the post!

                          I have watched the video. I don’t think there’s anything wrong there… Just those beans… Man, they are soooo dark! Presumably oily and dried up, which would explain the file grind and therefore the lengthily grinding time.

                            JHCCoffee God I hate YouTube shorts, no time scale, you can’t skip back or skip forward, have to watch the whole thing each time. So if there’s a machine problem, you might have to watch them in full a few times.

                            That said old, oily, overroasted decaff….Yeah that’s totally normal for those beans. Let them mummify fully and you might have to go so fine, they won’t even feed through

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                                I agree, looks normal. You’d expect it to be slower with the very fine grind you need for them. My morning coffee was 16s for 19g of medium with the NFC disk, at a grind setting of 12.

                                DavecUK God I hate YouTube shorts, no time scale, you can’t skip back or skip forward, have to watch the whole thing each time. So if there’s a machine problem, you might have to watch them in full a few times.

                                Thanks for putting up with YouTube, Davec. Appreciated! I shot the video with my iPhone and then uploaded with YouTube. Is there a better way?

                                Re the beans, the video makes them look darker than they are. They were labelled medium dark. I would call them a Vienna Roast. Looking at Sweet Maria’s roast scale Roast Scale the beans are a 14, on a scale of 1 to 16. They were frozen 2 weeks post roast, but I suspect that they may be stale due to moisture creation when I open the frozen jar. Here is a pic: They are a tad darker than I usually enjoy (I prefer Full City roasts (#13 on that scale).

                                FYI, the grind starts slow; it seems like the beans are having trouble getting through the control disk. Once the beans start to flow into the burrs, the pace picks up. It takes about 30 seconds to grind all the beans, but then another 15 seconds to get the last grinds out, to the full 16.5g in, without retention. So 45 seconds total.

                                While the NZ is great, I have ground frozen Full French roast through my Eureka much faster. Something seems not quite right.

                                    portrait mode auto goes into a short, as does a less 1 minute vid

                                    Decent De1pro v1.45 - Niche Duo - Niche Zero - Decent is the best machine ever made -

                                    JHCCoffee I am using the “NFC_Disk_alternate.stl” found on Thingverse Here I believe that one has a larger hole than standard but found it to be a ideal compromise between not using a NFC disc at all and the genuine NFC disc that i bought

                                        ken0062 I am using the “NFC_Disk_alternate.stl” found on Thingverse Here I believe that one has a larger hole than standard but found it to be a ideal compromise between not using a NFC disc at all and the genuine NFC disc that i bought

                                        Hi Ken. Thanks for the 3D Printing file. I am entirely new to 3D Printing and do not own a printer. So I will either go to my local public library to print it, or have the UPS Store or Staples (an office supply and services store) print it. Question: What filament, resin, etc could/should I specify? Or do I just upload the file and set the machine to work? I am not asking for a primer on this (I wouldn’t trouble you with that); just need to know whether there are any 3D materials preferences that I should specify. Thanks again for your help with this.

                                        And everyone: I’m confident that the NZ will work out to be a great grinder for me (after a break-in period, for both the machine and me). However, I do tend to drink medium-dark roasts more than light or medium-light roasts, and all of my coffee must unfortunately be decaf, so I do need a little help with grinding speed/time. I know that it will take longer to grind these beans even if I use a 3D disk with a slightly larger hole, but if we can get the beans into the burrs just a tad faster, especially at the beginning when the beans just don’t seem to be feeding through that small disk hole, that would be great. Additionally, the final grinds still take another 15 seconds to come out (after the grinding stops, based upon my view of the hopper and the sounds that I hear). So anything is worth a try.