DF54 flat burr

tompoland

Boy, those DF people just don’t stop….

giampiero

I assume the next 5-6 models should be conical…so they never stop🤭

tompoland

I’m hoping for a 120mm flat 😋😍

drdre89

Computer says no

MWJB

“The average retention was 0.1 to 0.2, sometimes 0.0…”, clearly doesn’t understand the concept of ‘the average’. (Not that this has any real bearing on the grinder’s performance, but why do reviewers feel compelled to spout this nonsense and frequently use scales with less accuracy than the interval they think they are measuring.)

tompoland

MWJB yes pretty basic stuff. My guess is that like his review of the Gevi Grindmaster, it’s a paid promotion more than an objective review. Still, interesting new grinder.

Dusk

I think it makes sense. I know for those of us that are well and truly down the coffee rabbit hole, spending £400 on a grinder might not be a big deal but it’s still quite a lot of money. If this around £200 then it’s going to step on the toes of a lot of “budget” grinders like the Sage/Breville SGP.

Not sure why he holds the grinder in the air whilst in use though…

giampiero

Dusk Not sure why he holds the grinder in the air whilst in use though…

He respect the trend about a grinder being noiseless while “not grinding”.

tompoland

This little fella arrived today.

Looking forward to pulling some espresso shots on the weekend, once its seasoned. I have 2kgs of our local supermarkets finest $12 per kg beans, ready to go.

Initial impressions are quite positive with the components and build quality seeming to be up there with the DF64 Gen 2. It’s really the burrs I’m mostly interested in and hoping they might perform as well as the other DF (64 and 83mm) burrs for espresso.

It’s a no frills grinder: no variable RPM, no pre breaker, no ioniser - but it looks and feels well put together and if it delivers in the cup, then it will be another big winner for DF.

Man, those people just don’t stop. Still hoping for that 120mm filter grinder!

Any one else having a play with one?

prezes

tompoland and the big brother is here as well ?!

Redla

tompoland what log book is that?

Dusk

How big is it compared to the DF64? And where did you get the dosing cup angle thing from? I don’t like the extension piece for the DF64 as it just creates a gap for the coffee to get stuck in

tompoland

Dusk here’s a pic of the 54 inbetween the DF64 Gen 2 and DF64V to give you an idea of relative size.

The dosing cup angle thing came with it standard.

PS not feeling the need for using the bellows in either the DF64 Gen 2, DF83V or DF54. Still using them with the DF64V.)

tompoland

prezes Yes indeed, arrived together.

tompoland

Redla it’s one I put together, let me know if you want a copy. email probably best (I have one for espresso and one for filter)

prezes

tompoland that’s interesting regarding the bellows! I found without using them the df83v was retaining around 0.3-0.4g

tompoland

prezes thanks for that, interesting.

I still have to season them but I’m getting less than 0.1 gram out at the moment so I guess (literally) that may change once retained grounds are settled. I’ll try and remember to post an update.

0.3 - .04 would be worthy of bellows, for sure. That’s similar to the DF64V which is bellows-mandatory in my book.

tompoland

prezes did a quick check on retention.

Notes:

This is is after 3kg of seasoning so I imagine that retained grounds are at their maximum
No RDT
Ground 20grams
Then popped the scales underneath and used the bellows vigorously five or six pumps.
It’s hard to read the scales due to a light bouncing off the grams reading on the RHS but the scales did not even register 0.1g of extra grounds exiting via use of the bellows.

It’s entirely possible that I’ve done something wrong and if anyone spots a mistake please let me know.

In absence of an error, retention is quite low. Duo-esque.

Re the video, you’ll have to look hard but if you view it full screen you’ll catch the weight on the RHS as 0:00 in about the last 2 seconds.

Dusk

@tompoland do you rdt? I still use the bellows on my DF64 gen2 but I don’t rdt

tompoland

Dusk the DF64 Gen 2 and the Duo are the only grinders that I use neither RDT or bellows. I must say though that RDT does settle the gounds in the catch cup nicely. Still, a tap of the catch cup on the bench does the same thing.

(I use both RDT and the bellows with the DF64V. I use RDT with the Varia VS3 but not the bellows)

MWJB

tompoland Retention would normally mean stripping the grinder and weighing the grinds captured in the burrs, chute, auger etc. What you are doing here is really assessing the ‘dose consistency’. I think this is more practical aspect to measure, as I don’t think people strip & clean their grinders every 100 grinds 😃

I would always use 0.01g resolution scales. When I first got my Niche Zero I checked the dose consistency for 10 grinds with 0.1g scales, I always got the same answer - 0.0g difference. There were visibly grinds that exited the grinder, when I then used 0.01g scales I found the standard deviation over 10 grinds was 0.19g, if I add this to the average difference in beans in, to grinds out, I get 0.23g. Calculating to 95% confidence level 0.44g.

The 0.1g scales do not ‘see’ this difference.

I measured the dose of whole bean, then the difference between that and the grinds produced, but I wouldn’t say that was any more ‘correct’ than what you’re doing,

Grinder dose consistency