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Baratza Sette single dosing
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Regarding retention, just did a burr clean today, and like others it came to about 2 grams just in the slots where grinds fall through. Interesting! Never noticed a difference when just purging 1 gram, but from now on I may use something to clear a bit of it out, and purge just a small amount. Need something bendy and not rough, like Jackster 's cable tie idea!
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Yeah seriously some beans are just like that, and consistently too. Can pretty much predict it will happen every with a certain Colombian I roast up!Originally posted by Blackfish View PostFunny enough, I did switch to different beans after the clean, so I cannot exclude that it is actually caused by the coffee. Also, on second thought, the coffee seems to have the static charge as it keeps jumping out of the container after I’ve ground it if I stir it with a teaspoon. Interesting indeed! I’ll try the wet finger next time.
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Blackfish, I had the terrible electrostatic spraying soon after I got my 270Wi when I got the Lavazza Super Crema, as recommended by WholeLatteLove in one of their reviews. They were fresh enough, from memory, and lived up to their name. However, the static was terrible and resulted in my getting the 3D funnel printed. I haven't had it happen since with fresher beans and now roasting my own. If you wish to stick with those beans then I do recommend that funnel and, failing that, Jackster's recommended Ross Droplet Technique (RDT).
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Funny enough, I did switch to different beans after the clean, so I cannot exclude that it is actually caused by the coffee. Also, on second thought, the coffee seems to have the static charge as it keeps jumping out of the container after I’ve ground it if I stir it with a teaspoon.Originally posted by simonsk8r View PostHmmm that's interesting... I have had that exact thing happen, but it was just dependent on the bean type. Is the plastic chute reinstalled properly? (The chute that helps direct the grounds downward rather than all over the place)
Interesting indeed!
I’ll try the wet finger next time.
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Try a wet finger stirred through the beans before you put them in the hopper.
I don't know the upper limit of this, but a couple of drops (technical term) doesn't seem to upset things, but makes the static noticeably less.
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Hmmm that's interesting... I have had that exact thing happen, but it was just dependent on the bean type. Is the plastic chute reinstalled properly? (The chute that helps direct the grounds downward rather than all over the place)Originally posted by Blackfish View PostI decided to give my sette 270wi a thorough clean but after reassembling the burr now the coffee seems to be possessed and shoots off in all directions including upward (it seems to defy the gravity laws, it’s quite entertaining) making a total mess on the bench. I assume I’ve somehow created static charge on the burr when I’ve cleaned it, has this happened to anyone, and how do I remedy?
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I decided to give my sette 270wi a thorough clean but after reassembling the burr now the coffee seems to be possessed and shoots off in all directions including upward (it seems to defy the gravity laws, it’s quite entertaining) making a total mess on the bench. I assume I’ve somehow created static charge on the burr when I’ve cleaned it, has this happened to anyone, and how do I remedy?
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I had a custom bent cabletie, poked it up from underneath after every grind to get rid of those grinds.
maybe a drop of water (or wet finger) stirred through the beans before grinding them may help
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PhatBoy I'm glad you asked, because when I ground a dose this morning, the puck blew apart almost immediately. I clicked the macro dial down to 3 (seriously?!) and the next shot was fine. After I grind each time, I press the Play button on the grinder to purge whatever is still in the grinder because I single-dose, weighing 20g of beans, then dropping them in the grinder hopper, so theoretically, there should never be any grounds in the normal path.Originally posted by PhatBoy View PostNice!
Let us know if the 2.3g gets stuck back in there after the first dose
I pulled the inner burr assembly out again, and again, grounds had stuck in the slots in the plastic sleeve that the grounds fall through. I tapped-out the grounds, but this didn't dislodge he ones in the slots, so I poked them through with my raking tool (aka needle stuck in a cork), and they weighed-in at 1.0g. Having seen the grounds retained in the normal path, and thinking that the next grind would push them through into the portafilter, and having them weigh-in at 1.0g, I now believe that there would be a little stale grounds taint. If it was 0.3g, then no, but 1.0g - I think yes.
Then I got to wondering why I had to drop the macro dial down to 3 after tinkering with the inner burr assembly yesterday, and didn't need to wonder for long - the inner burr came off in my hand!
Then I looked at the threads:
Looks like the factory applied the Loctite (or whatever it is) too far down the thread for the burr's thread to get any, so that may be how the burr worked its way loose.
When I saw this, I thought that that might be why I've had to move my macro setting from 9 when I bought the grinder to 4, but that appears not to be the case: after reassembly, I set the macro dial at 9 (and micro at E), ground a dose, and it channeled immediately, I reduce the macro by one click, rinsed and repeated, and got the same result...all the way back down to 4.
Now I'm wondering whether the loose inner burr has caused sufficient wear for me to have to move the macro dial from 9 to 4 in what I would think would be light work since purchase. However, I can't see any uneven wear of the burr. It's comforting to know that the Sette parts appear to be inexpensive.
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Nice!
Let us know if the 2.3g gets stuck back in there after the first dose
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PhatBoy You inspired me to get under the hood and clean my grinder. As with you, I cleaned-out about 2g of grounds from the inner burr assembly and about 0.2g (measured with my not-so-Decent scales - Acaia Lunar scales should be delivered on Monday!). Granted, there was also half a bean in that lot.Originally posted by PhatBoy View PostPulled the burrs out & cleaned them. There was 2.3g of grind retention build up in the plastic burr carrier.
Ran some beans though and it retained the same amount. Next shot was 20in 20 out.
Wondering how the retained grind effects the quality of the next shots regardless of single dosing or not? Does it just bed in and stay there and act like a barrier? Does it taint flavour over the next few days etc until i pull it out to clean?
As an aside, I'm pretty surprised that my macro setting is at 4 (no change because of cleaning), when I remember it being at 8 when new (Aug 2018). I only grind 20g a day, and generally spend four weeks a year away, and didn't use the grinder all summer in 2018/19 and 2019/20 because I focused on cold brew (the 270wi doesn't grind coarsely enough for cold brew, so I use a Hario Skerton hand grinder).
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