DF64 Turin G-IOTA grinder static - Page 2

November 13th, 2021, 7:56 pm

Kran wrote:I was all ready to echo RDT. I've always used it and don't have static issues. Then for this post I ground a shot with RDT and then one without. Can you tell which is which?

Too close to call! Wondering if the a little moisture from the first grind with RDT helped manage the static for the second. I have never had a grind that clean. Did you use the bellows?
I wonder what you will get tomorrow if you start without RDT.

#12: Post by **Giampiero** » November 14th, 2021, 1:39 am

cap2 wrote:I am eager to see your design and to read about your results. I expect you are already doing this, but wonder if you could check that the stainless chute is grounded. All of the externally accessible screws and uncoated metal parts I have checked on my df64 are grounded, so it likely will be if it is screwed into the aluminum body.

My "mods" are always rural, i only recycling what i have in home.
I did few months ago another metal chute, but the "raw material" was not suitable for such purpose and at that time the difference were not noticeable.
This time i started from a small tray, i think was to separate the gems sizes or similar, don't ask me why i have it, i'm not a gems trader at all.
Anyway i realized 2 half shell, then i bent some side to realize the fixing flap, then i glued the 2 shells with superglue and wrapped the chute with a self-amalgamating tape to give a better stiffness to the structure due to i guessing i have to install and reinstall many time.
I did it a bit bigger so i can eventually always reduce it with some small panel inserted internally, left or right side.
I think i will back with some proved "impression" in the next days, at moment i still to understand what is doing what.

#13: Post by **Kran** » November 14th, 2021, 3:04 pm

cap2 wrote:Too close to call! Wondering if the a little moisture from the first grind with RDT helped manage the static for the second. I have never had a grind that clean. Did you use the bellows?
I wonder what you will get tomorrow if you start without RDT.

Interesting point regarding residual moisture. Here's the first shot of the day this morning, no RDT. Still looks ok but the stream of grinds out of the grinder is less direct than with RDT, a little spray.

November 14th, 2021, 3:48 pm

Giampiero wrote:My "mods" are always rural, i only recycling what i have in home.
I did few months ago another metal chute, but the "raw material" was not suitable for such purpose and at that time the difference were not noticeable.
This time i started from a small tray, i think was to separate the gems sizes or similar, don't ask me why i have it, i'm not a gems trader at all.
Anyway i realized 2 half shell, then i bent some side to realize the fixing flap, then i glued the 2 shells with superglue and wrapped the chute with a self-amalgamating tape to give a better stiffness to the structure due to i guessing i have to install and reinstall many time.
I did it a bit bigger so i can eventually always reduce it with some small panel inserted internally, left or right side.
I think i will back with some proved "impression" in the next days, at moment i still to understand what is doing what.

looks great.. Just the sort of thing I would have tried if I had your skills. I see a lot of grounds on top of your adjustment ring. I guess you have plenty of experience with static.

Looking forward to impressions.

#15: Post by **jpaulm** » November 14th, 2021, 5:45 pm

I am using a high dosing collar with a cutout for the grinds chute. Mine sits on the dosing cup, but you can also get one to sit directly on the portafilter. Got it from Oat Siripun on the DF64 Single Dose Grinder Facebook group. Solved the static problem with coarse grinds. I have not had a problem with espresso grinds. Workmanship is excellent.

#16: Post by **michang5** » November 14th, 2021, 5:56 pm

Another vote for the custom collar with the cutout.

I swapped to the Mythos declumper a few weeks ago. My first four grinds (into angled and elevated cup) were horribly staticky. I tried RDT for the first time with Grind #5. It helped a lot.

The next morning, I went back to no RDT and grinding into my portafilter with Oat's custom collar. Magically no static. Here's a video of the 8th grind (53% humidity indoors) - . A few grounds get stuck outside the chute, but so few that I only vacuum once a week.

#17: Post by **Giampiero** » November 14th, 2021, 7:41 pm

jpaulm wrote:I am using a high dosing collar with a cutout for the grinds chute. Mine sits on the dosing cup, but you can also get one to sit directly on the portafilter. Got it from Oat Siripun on the DF64 Single Dose Grinder Facebook group. Solved the static problem with coarse grinds. I have not had a problem with espresso grinds. Workmanship is excellent.

I bought the same dosing collar, it worth, in my standard 14gr coffee basket it wobbling a bit, but in a VST or IMS basket fit well, to be really extremely demanding, a version that fit the outer circumference of the basket could achieve a better distribution of the ground.
Anyway in my situation it did not solved the static problem, it only contain the spray of coffee particles that stick all around the collar inner wall instead of fly around.

November 14th, 2021, 10:07 pm

FWIW; I removed the de-clumper entirely on my DF64. Also removed the PF bracket because I prefer to dose directly into a cup or basket like with the Niche. I have SSP MP burrs installed and always use RDT. I grind with the metal lid on and don't use any kind of anti-popcorn device.

-- I get no static for coarse grinding for brew methods and do not need to use the bellows at all.
-- For espresso I have a tall magnetic funnel that sits on the basket, and I get static during the last few grams of the grind that causes the coffee to stick to the inside of the funnel. I use the bellows to get the last 0.5g of coffee out, but no static for this part.

This works well for me, but I'm also not using my DF64 for high-volume either.