DF64 Turin G-IOTA grinder static

Grinders are one of the keys to exceptional espresso. Discuss them here.

#1: Post by cap2 »

How to mitigate static in the DF64 and other grinders.
Note: I narrowed this topic title from Grinder static to just the DF64. Hopefully anything we learn here will apply to other grinders as well.

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#2: Post by Nunas »

I don't know why some have more and some less...possibly something to do with the type of plastic. I do know that if you spray a tiny bit of water on the beans, the problem goes away. I used to have to do this with my previous grinder in the winter, when the air is very dry in the house. With my Sette, I don't have to do it at all, nor with my Feilai ZF64.

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#3: Post by cap2 (original poster) »

Static seems to be the bane of many grinders. Some grinders, like Eureka Mignons, and DF64 I am familiar with, have plastic exit chutes for the grounds in an otherwise mostly metal grinder. Why is this? With so much metal in the rest of these machines, I doubt it is a cost savings. Maybe sound insulation? Given all the trouble we go to deal with the static, it seems like the wrong choice. If it were all metal (raw metal,n ot painted, not anodized, nor otherwise made non-conductive) wouldn't this ground the discharge chute, and potentially discharge at least some of the static. I have never seen one in person, and will never afford one, but I see the Levercraft Ultra brags of low static and seems to have a metal discharge chute.

Thinking of making a metal discharge chute for my DF64, but wondering if my reasoning is sound before doing the work, which will be a stretch for my skill level.

Does anyone have any insights on this?


#4: Post by jpaulm »

I have a DF64. I think the chute on mine is actually metal.

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#5: Post by yakster »

Here's an old, but good article on grinder static.

https://baratza.com/static-in-your-grin ... s-complex/

The RDT (Ross Droplet Technique) of spraying a bit of water on the whole beans works well.

LMWDP # 272


#6: Post by Giampiero »

jpaulm wrote:I have a DF64. I think the chute on mine is actually metal.
The front chute cover panel is in aluminum, but the ground chute is in plastic, ( unless something changed recently) anyway i did built a chute in stainless steel, and i will try tomorrow.

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#7: Post by cap2 (original poster) »

Giampiero wrote:... i did built a chute in stainless steel, and i will try tomorrow.
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.

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#8: Post by cap2 (original poster) »

parts diagram for reference:
Brewzologist wrote:


#9: Post by mwynne »

Lots at play... burr set, ambient humidity, beans, etc...

But with my DF64, I find the static almost non-existent at the moment (both grinding espresso and pourover). I'm using the DIY mythos-style declumper (method #1 here https://jtt.coffee/df64#https://www.not ... 38f7d5d011) and RDT.
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#10: Post by Kran »

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?