Lucca Atom 75 Espresso Grinder - Comments

#1: Post by **another_jim** » November 24th, 2021, 7:21 pm

The review thread is only for review entries; please post your comments here.

#2: Post by **ira** » November 25th, 2021, 4:00 am

FWIW, as far as I understand, cryogenic treatment will not harden metal. I believe it relieves stresses in the metal.

Ira

November 25th, 2021, 10:28 am

Thanks. The Eureka literature says the cyrogenic treatment lengthens burr life; so I assumed it was due to hardening. In any case, this seems to be a premium finish, since the new Mythos burrs are using it, and Ditting uses it for the Lab burrs.

#4: Post by **ira** » November 25th, 2021, 1:30 pm

Traditionally it's done on cutting tools, transmission gears in race cars, rifle barrels for very high accuracy shooting, things where the internal stresses relieving themselves under operation will lead to unwanted changes in tolerances. It's a subtle process and at first was occasionally considered snake oil, though now it seems to be accepted. At least that's how I've understood it's supposed to work.

Ira

#5: Post by **yertchuk** » November 25th, 2021, 2:17 pm

Any impressions of how the app works? I'm thinking about the app-optimized grind parameters for coffees in the Misto Box collection. Does that really bypass the usual dialing-in process?

#6: Post by **TenLayers** » November 25th, 2021, 2:36 pm

Some high end woodworking tools, those with blades, will apply a cryogenic finish to the blade. They maintain it hardens the blade and lengthens the time between sharpening.
Edit. The word harden..maybe not the right word, maybe strengthens is better.

#7: Post by HB » November 25th, 2021, 2:57 pm

yertchuk wrote:Does that really bypass the usual dialing-in process?

It definitely simplifies the process. Of the 3-4 coffees I've tried, its recommended starting grind setting was correct within a pour time of a few seconds. I don't recall any that were "sink" shots. That said, the TrueGrind app is still a work in progress. For example, I forgot the login password and there was no "I forgot" option to reset it.

#8: Post by **daveR1** » November 26th, 2021, 10:04 pm

I saw accuracy improvements with cryo treated rifle barrels when I was shooting competitions. Don't recall any mention of increased durability due to cryo treatment

#9: Post by **redbone** » November 27th, 2021, 2:02 pm

My kitchen knives are also ice hardened leading me to believe it's done to prolong a sharper edge.

#10: Post by K7 » November 29th, 2021, 1:21 am

Any reason to remove the grate for single dosing test?
IME the grate is needed to reduce static and spraying whether you use the hopper or not and having it doesn't prevent you from single dosing. Bellows should puff out most of what's behind the grate after a session.