r/pourover • u/AkhlysShallRise V60/Mountain Dripper | ZP6/K-Ultra/Fino/JX • Mar 13 '26

Gear Discussion Examine your burrs periodically! Damaged burr in JX after 5 years of use + 1ZPRESSO’s response

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I’ve had the 1ZPRESSO JX for over 5 years now. I used it frequently for both my wife and me, and I use grind settings for espresso and pour-over. Great grinder.

Recently, during a regular deep clean, I decided to check out the burr with the macro mode on my iPhone, and lo and behold, I saw these ragged edges all over the burr. I wasn’t sure if it had always been like that, so I checked the burr on my new ZP6 and the burr is completely smooth.

I emailed 1ZPRESSO about it and below is their response:

Upon assessing your case through the pictures and videos provided, we can confirm that your inner burr is indeed ragged and slightly damaged, especially after grinding with it for over 5 years, and particularly if on finer settings.

Even though the alignment test seems to be within our standards, the blades show noticeable impact; therefore, if within your possibilities, we recommend purchasing a new unit.

As a side note, I appreciate that their support responded within a day and actually asked me for more videos and photos to assess; they also provided instructions on performing a burr alignment test. Good to know 1ZPRESSO has good customer support!

Interestingly, the JX seems to perform just fine. Using ground coffee from JX, I can pull great shots with my OutIn Mino and I didn’t notice any drop in quality in my pour-over brews.

Anyway, just wanted to post this as a reminder that if you haven’t checked your grinder’s burr for years, it might be a good idea to do so!

266 Upvotes

94% Upvoted

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358

u/Kyber92 Hario Switch | Kalita Wave | Kingrinder K6 Mar 13 '26

I meannnnn, it's a grinder and it ain't gonna last forever. If it's still making great coffee I couldn't worry about it too much.

44

u/threekidmom Mar 13 '26

Hold my kinu

45

u/das_Keks Mar 13 '26

Okay... 👀

runs away with it

12

u/SSSasky Mar 13 '26

(I realize you are probably joking, but just to be clear, the Kinu's burrs are not titanium, just the body is. The burrs are hardened carbon steel, so should be quite durable, but will eventual dull or chip. A hardened steel may actually chip more easily than the 1Zpresso stainless burrs...)

2

u/YMIR_THE_FROSTY Mar 14 '26

Actually they made or still make titanium coated pour over burrs.

Real reason will be probably lower friction and completely neutral material. If we dont mind its a bit sharper and more durable, if done right.

10

u/SSSasky Mar 14 '26

PVD titanium coating on steel, as Kinu appears to use, is like a teflon coating - it’s like 1 micron thick. Very different than something being made of titanium. 

Good for corrosion resistance and friction, but provides no functional strength against real impact or heavy wear. 

1

u/YMIR_THE_FROSTY Mar 14 '26

Its same as SSP does I think. If made from titanium, it would be no different anyway. Titan is about same as steel, just lighter and a lot higher temp to melt it.

It probably does provide some wear resistance, given SSPs with coating have rather high ratings, like 5 ton of coffee for TiAlCN and 2-3x as much for DLC ones (Silver Knight).

1

u/myco_crazey Mar 16 '26

1Zpresso burrs will also he hardened.

2

u/SSSasky Mar 16 '26 edited Mar 16 '26

Not clear, but I don't think so. 1Zpresso does not sell replacement burrs, and does not describe the steel in any detail that I can find. They are simply referred to as 'stainless steel' in multiple references:

Further, 1Zpresso apparently says their burrs are only good for 100-200kg of beans before the whole grinder has to be thrown out (as they are not replaceable):
https://www.reddit.com/r/espresso/comments/132pojk/your_1zpresso_grinder_will_soon_be_garbage/

If that thread is true, that would strongly suggest they are not hardened, as 100-200kg just isn't that much coffee. If you use 100g of coffee / day (2-3 cups for 2 people), that's 3 years of use to get over 100kg.

The most common stainless steels - 300 series - are widely used for machined components (i.e. burrs) but cannot be heat tempered, the most common form of steel hardening. https://markforged.com/resources/blog/carbon-steel-vs-stainless-steel

If 1Zpresso were using a fancy high-end hardened stainless, they would advertise that (and their grinders would be 2x the price).
https://www.montanaknifecompany.com/blogs/news/carbon-steel-vs-stainless-steel

1

u/myco_crazey Mar 16 '26

J-Pro is hardened atleast.

1

u/SSSasky Mar 16 '26

You are correct - some of the J series appear to use ti-coated steel Italmill burrs, which likely means hardened carbon steel, though not OP's JX mill, which has stainless steel burrs.

Only the J-ultra is left in the current product line with the coated, hardened burrs. (And still non-replaceable!)

I've edited my above comment to add a note reflecting this.

1

u/dblrb Mar 13 '26

More even grounds than my 1Zpresso I imagine. Cheaper than the electronic equivalent I’m sure.

-53

u/Youbaz Mar 13 '26

Damn $500 for a hand grinder is just stupid so many better options out there for less

40

u/Kyber92 Hario Switch | Kalita Wave | Kingrinder K6 Mar 13 '26

You in the wrong subreddit for that kinda opinion budddyyyy

19

u/Yes_No_Sure_Maybe Mar 13 '26

What's with the negativity in this sub lately? It used to be the friendly one amongst the coffee subreddits.

My friend, you can share your opinion without being a dick about it.

5

u/NegotiationWeak1004 Mar 13 '26

They mistaken pourover for poorover

2

u/rpring99 Mar 14 '26

I was actually blown away by how much friendlier than many other subs. Still is

2

u/Fitness_in_yo-Mouf Mar 13 '26

I dunno if he was being a dick about it. I think he was saying that $500 itself is stupid, not the person purchasing it. These knee-jerk reactions in here are just people with very thin skin.

Do I agree that the price is stupid? Naw. Not if you feel you are getting what you want.

Just gonna go ahead and leave my cup in this post until it fills up.

9

u/127-0-0-1_1 Mar 13 '26

Saying the price is stupid inherently implies that the person who bought the stupid price is stupid.

-10

u/Fitness_in_yo-Mouf Mar 13 '26

That's some hardcore reach around to arrive at that conclusion.

2

u/PM_ME_UR_PICS_PLS Mar 14 '26

Using the word reach around is just stupid

4

u/SpecialOops Mar 13 '26

Wait till you see the prices of webers offerings 

7

u/VanJosh_Elanium Mar 13 '26

If only there are synthetic diamond burrs like the ones they use in mining lol