Shipping July released today. it could of course be an April fools joke. Albeit a strange one… https://www.nichecoffee.co.uk/products/niche-duo?variant=43187239846019

@"Igm45"#p40972 Not an April fools joke….people have ordered.

Some time to launch! 😏 I see from the specs that it's physically bigger than the Zero….assuming this is - at least in part - to house a bigger motor for the flats?

I still believe it's April fool's, too good to be true….

@"[unknown]"#p41017 Have you seen he full manual you can download and read ?

@"MattH"#p41026 https://cdn.shopify.com/s/files/1/0081/2076/2450/files/N685_INSTRUCTION_BOOK_ROW_83F_1_080323_WEB.pdf?v=1680015642

Two excellent videos from Jake. https://www.youtube.com/watch?v=JKdyBJ7TkhU https://www.youtube.com/watch?v=C90i5RVoBpo

@"DavecUK"#p41257 There are a couple of others there now too. (why does the plug change colour 🤔???)

> @"Del_UK"#p41290 (why does the plug change colour 🤔???) Dunno? RH Lead swaps colour as well in the starting clip

Can I chuck my hat into the ring? Right, first off, this is not an engineering review. I was lucky enough to be asked by Niche back in October, to accept the latest version of the Niche Duo. I had to sign an NDA and that was that. A couple of days later, a package turned up and I thought, I recognise that. On inspecting the packaging, it is quite clearly designed with the Zero experience in mind. The packaging has instructions printed on it for starters. Once you open the outer box, there is a strap/handle to help you lift the inner box meaning that you do not have to tip it upside down to force it out! I received a gleaming white model that arrived with espresso burrs fitted to it. A quick glance through the comprehensive handbook to make sure that there was nothing I needed to be aware of, and coffee here we come! When I dial in a new grinder, I always pull the first shot at whatever it arrives set to and take my reference from there. The third shot was spot on. 16 gms on an espresso setting takes me 16 seconds. I did not suffer from any static, the grounds were nice and fluffy. I believe the burrs originate from Mazzer (both espresso and brewed). Eventually, I thought it was time to try swapping the burrs over. Again, no help from Niche. They selected me as tester for their idiots instructions, and I feel well qualified for that role. I have made a video that I will post and it took me 70 seconds or so to swap over. You raise the lid, unscrew the silver dial, remove the screw to tighten down the top burr set, then remove it. Push down on the bottom burr set and remove. The process is then repeated with the brewed burrs (these are a different colour, blue) in reverse of course. I am deliberately keeping this summary vague! I have no idea as to how they get a big flat to be retention free. Having swapped the burrs over many times, and since access allows with ease, whenever I clean it out the retention is minimal. If I remember I will weigh it at some point but as any Niche Zero owners knows, you learn to trust your machine and just accept the claims! https://youtu.be/63Iv5gUy1JQ https://www.instagram.com/reel/CqlKJZjg_ZPsfdrHkp5cDIoL_KjSXhE5E5st-00/?igshid=Mzc1MmZhNjY=

@"Del_UK"#p41290 because I have a white extension lead, which I took out of the vid 😂

Niche duo - 83mm flat

tompoland

drdre89 they’ve worked for me. I’ve used the Coles equivalent. As MRS suggested, open it up a bit to around filter grind.

Parm

Loonster Not making a statement on Lance’s review, but the loose screw thing is something I’ve experienced with mine. I wrote to Niche about it and they basically told me to tighten it more. I’ve gotten it unnaturally tight, way past the example shown in their demonstration videos, and it will still go back to being finger loose after a week or so. I’m not sure how it impacts the grind and not sure how I should feel about it. I’ve basically tried to stop worrying about it because I’m not even sure how big of a problem it is or whether Niche would be able to do anything about it. It is a bit disconcerting to be tightening it down as much as possible and still having it come loose and eventually rattling slightly as the grind finishes.

Still love the grinder, but would be lying if I didn’t say that the screw issue sticks out to me as a small potential problem with the unit. Hopefully when it becomes slightly loose like that it’s not making a major impact on the grind itself. I haven’t noticed a perceivable difference in shot quality, but I usually tighten it up right after I notice it so I’d have to run more tests to know how it’s impacting the cup.

tompoland

Parm screw thing is something I’ve experienced with mine.

Me too. In my case I put it down to operator error. I may start using a torque wrench just to be sure.

@DavecUK probably a bit of a shot in the dark but do you have any idea of Nm for the centre bolt and burr screws?

Igm45

I too have raised the same issue with my Niche.

I contacted them and was told they’d not experienced the issue before. They asked me to send them a video, I did, I was told ‘fasten it tighter’ I’m not someone who lacks ability to securely tighten a screw. No matter what I do it works itself loose.

Like you I’m unsure of what if any issue this causes however I can’t see how a loose screw wouldn’t affect the grind consistency.

Parm

Igm45 It’s good to hear that I’m not the only one! I’m going to raise it with Niche again. I think it’d be worth having them acknowledge that it’s happening with some units. At first I was convinced I was doing something wrong but after they gave me permission to tighten it as hard as possible I’ve been cranking it down with force, even applying counter resistance to the burr the other direction to ensure it’s getting fully tightened. I’ll follow up after I get a reply.

Cuprajake

It puzzles me how a screw turning clockwise can work loose? That shouldn’t happen. Fwiw I’ve not experienced it either of the models I’ve had.

There must be something a miss with the screw

Parm

Cuprajake The screw looks fine physically. And yes, I’ve been a bit baffled as well. It’s possible the vibration of the unit and resistance of the burr creates enough movement to eventually loosen things. Not exactly sure how it’s happening other than being able to confirm it’s happened more than a handful of times on my unit. It used to loosen up every few days, but with the more forceful tightening I can now get a few weeks before I start to hear the rattle and realize I need to tighten it up again.

Loonster

Cuprajake It puzzles me how a screw turning clockwise can work loose? That shouldn’t happen. Fwiw I’ve not experienced it either of the models I’ve had.

There must be something a miss with the screw

It likely happens when the blade turns off. The shaft is trying to stop while the blade wants to keep its momentum.

Igm45

I think DrDre had a similar issue with his unit too.

Parm

Igm45 I see that post now. Okay so definitely quite a few of us experiencing this. Glad to know I’m not going crazy! I’ll let you know how my follow up with Niche goes. I love the grinder but do want to make sure my unit is working properly as it was a pretty big investment for us.

drdre89

Igm45 I think DrDre had a similar issue with his unit too.

Yes please read my posts. I purchased a new Duo and the zero point kept changing. Finally I realised the bottom burr screw kept coming loose. My retailer is sending me a replacement.

Cuprajake

Does it happen with both burr sets if you have them?

Parm

Cuprajake I have not used the filter burrs enough to test this. I’ve used them for a few cups of coffee, but espresso burrs always go right back in afterward because that is what I’m using 99% of the time. I believe during one of my early tests with the filter burrs it happened once.

drdre89

So just to give you guys an update with my loose screw 😆 … since my Niche Duo was a week old, the retailer I purchased from contacted Niche , and Niche advised them there was a “small number “ of units that had this issue where the bottom screw would come loose.

So I’ve returned my unit for a replacement which should arrive next week hopefully. I’ll update to let you know if the screw gets loose again! … if it does I’ll be asking for a complete refund (and not a replacement).
This replacement I will be receiving is fresh new stock.
The original one I received was a June 2023 manufactured model.

Those having issues with Niche about getting this loose screw fixed … Niche are lying when they say they don’t know about it. Don’t take no for an answer. They definitely know this is an issue! So I would ask for a replacement.

Parm

drdre89 Thanks so much for sharing your experience. This has been on my mind since getting the grinder and I thought I was the only one with a problem. I always like to give a company the benefit of the doubt and it’s possible when I first reported mine the issue was fairly under-reported. Either way I’ve reached back out and asked for their process to replace or fix. I ordered directly from them and it shipped to the US so not sure how they’ll handle that. Hopefully it’s just an early design flaw.

Cuprajake

I’m wondering if the screw is slightly to long, just enough not to allow it to fully lock in. That could be tested by adding a small washer to remove the slack, if it doesn’t do it then the screws too long

Ando

I have had this issue occasionally over last 2 and a half years with my Zero.
I have never done anything about it - just tighten again and crack on.
When it loosens it def impacts the shot - that is sometimes how I realise it’s loosened off again!

drdre89

Ando I have had this issue occasionally over last 2 and a half years with my Zero.

For me personally I never had this issue when i had my Zero.

Cuprajake

There’s a key way on the shaft, but if that were the case as it’s spinning clockwise it would tighten the bolt.

May be worth someone with the issue measuring the bolt. Just a thought, because in this case a millimetre could make all the difference

DavecUK

I would have thought a thin M6 lock washer or fibre washer would stop this.

perhaps something like these

They look like they might be 2mm thick so you would have to check for clearance in the upper burr bearing hole and that it wouldn’t touch the top internally.

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