Boy, those DF people just don't stop.... https://youtu.be/2fe9n5DwZC0?si=JzBASVsivv5t79pw

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

I'm hoping for a 120mm flat 😋😍

"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.)

@"MWJB"#p60452 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.

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…

> @"Dusk"#p60454 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".

This little fella arrived today. [URL=https://i.imgur.com/fkhDRl4.jpeg][IMG]https://i.imgur.com/fkhDRl4.jpeg[/IMG][/URL] 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?

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"#p62710 and the big brother is here as well ?!

DF54 flat burr

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

tompoland

MWJB would always use 0.01g resolution scales

Great idea. Just ordered some 0.01 scales. That will be very helpful thanks.

Yes, I was after potential “exchange” grounds versus retained, or another way of putting it would be the difference between using the bellows and not using them.

I’ll review that link too.

Thanks for your input, very helpful.

JonWoo187

MWJB Actually depends on the quality/sensitivity of the .1 gram scale at hand. I grew tired of slight inconsistencies with typical coffee type scales and invested in an Ohaus Scout STX 421. Light yrs ahead of any other scale I’ve had before it and should perform 100% indefinitely.

MediumRoastSteam

tompoland Yes, I was after potential “exchange” grounds versus retained, or another way of putting it would be the difference between using the bellows and not using them

You could have had 7g that is constantly being exchanged. Whatever you demonstrated doesn’t have much value… the only way to find out is to open that grinder up and see what has been left inside. Which I believe it has been demonstrated by someone else already and, in summary…. There wasn’t much.

The bellows may not necessarily dislodge everything in the chamber/chute either. This was demonstrated on an earlier version of the df64 by Hoon coffee if memory doesn’t fail me.

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