I know James Hoffmann, in a few videos now, heavily suggests doing the RDT (ross droplet technique) on coffee in single dose grinders; indeed, in one video, he heavily suggests doing this 3x as much to get, as he says 'better anti static results". He even demos it on a DF64 Gen 2 in his Best grinders under £500.
But he's wrong. At least with grinders equipped with a plasma generator.
Doing the RDT on grinders with a plasma generator (like the DF64 Gen 2) WILL GUM UP the works inside around the plasma coil, making it 100% ineffective, and increase the overall static issues.
Don't RDT any grinder with a plasma coil.
Got this direct from TWO grinder manufacturers. I've been told one is trying to get James to do a new video "recanting" the advice. It's causing them a lot of service calls.
@coffee@espresso One correction to my post (I blame the late night typing for the mistake)
Jim didn't say do 3x as much RDT for "better anti static results". He was parroting a recent scientific study that showed 3x RDT resulted in more complete extractions from ground coffee for espresso.
@coffeegeek@coffee@espresso
As the owner of a cheap plastic-binned coffee grinder, I simply walk away for 15-20 minutes, and the static charge dissipates on its own.
@RealGene@coffee@espresso IMO, that's too long to let grinds sit. They are going stale, losing all their Co2 in that time. And the finer the grind, the faster it happens.
@coffeegeek@RealGene@coffee@espresso however there is also something to be said about too much CO2 when coffee hasn’t been allowed to properly rest after roasting!
It can, but often, a good knock on the counter can dislodge the static build up stray grounds with manual grinders. I don't RDT manual grinders myself.
@coffeegeek@coffee@espresso Are all grinders that have built-in anti-static features using plasma coils? If not, which grinders use plasma coils? #coffee
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