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Leave it to James to get the author of the paper for his video.
Bit I hadn't picked up before is that Ionisers like on the df64 are in the wrong part of the workflow to reduce static in order to improve coffee uniformity as they are on the exit rather than before the chamber. Obviously they still reduce mess.
If I understand the explanation for how static is generated, it happens within the grind chamber, during fracture as well as during rubbing of particles. If that's the case then ionizer before it wouldn't help much. Rather if there's a way to make an ionizer within the chamber itself, perhaps using the burrs themselves might produce a similar result as what the paper demonstrated.
Interesting, would need some clever placement to target between the burrs. I will stick with water, much easier.
Ah interesting. I really appreciate the ionizer on my Fellow Opus, it does appear to help with the mess (because once it felt like it didn't kick in and boy, was it messy). But I didn't realise that point about the positioning in the workflow. Will need to try a drop of water too.
Yeah the DF grinders are like that without theirs or water, the messy grinder in the video looks like a DF to me. I could not put up with it without RDT.
My sculptor has the knock ring that keeps the mess constrained really well, that is a proper magnet for chaff.
I measured the spray output of my sprayer by spraying 80 times, measuring the sprayer weight difference and doing some division. Then I tested 20μL/g RDT and saw an increase of brew time from 26s to 30s. A single-person blind (not me) ~~test~~ anecdote shows the RDT shot has "more flavor."
Here's a link to James'es poll in case anyone else wants to contribute a result: https://docs.google.com/forms/d/e/1FAIpQLSf-zI147xZPPVD_QZxKElJxDwwYlZ4EfIc-5T99vuLhBNPtLQ/viewform