K-Plus Grinder

How to Clean and Maintain 1Zpresso Manual Coffee Grinder? (External Adjustment Version)

Greetings, fellow coffer-lovers.

How often that you clean your 1Zpresso manual coffee grinder? 
Proper maintenance could prolong the life of your grinder for a long period of time.
We advise customers to dismantle the grinder once a month to perform cleaning and maintenance.
The grinder could dismantle without any helps from the tool.

Here is a reassemble tutorial for the top adjustment mechanism of K-Pro & K-Plus grinder.
You also can find the cleaning and maintenance tutorial of the internal adjustment and top adjustment from our blog. 
Below image demonstrating the re-assembly with K-Plus grinder.




Step 1:

Remove the crank handle and the catch-cup.

K-Plus Grinder



Step 2:

Pressing the burr set and loosen the knurled thumb nut by turning counter-clockwise.

K-Plus Grinder
K-Plus Grinder



Step 3:

Take out the burr set by pressing down the central shaft. Collect the upper ring cap and the upper bearing which inside of the adjustment dial ring.

K-Plus Grinder
K-Plus Grinder

Step 4:

The adjustment dial ring and the outer burr ring can be taken out by turning clockwise. (For K-Pro grinder user: Attaching the catch-cup to remove the outer burr ring by turning clockwise.)

Note: the outer burr ring unable to remove without taking out the burr set.

K-Plus Grinder
K-Plus Grinder



The magnetic catch-cup of K-Plus grinder could be dismantled in three parts. Remove the magnetic attachment ring by turning counter-clockwise. Turn counter-clockwise to separate the closed receiver from the open receiver.

Perform the step reversely to recover the catch-up.

K-Plus Grinder
K-Plus Grinder
K-Plus Grinder
Press to remove for throughout cleaning.



Step 5:

Take out the pc lid by turn counter-clockwise throughout cleaning. Apply some strength to detach the wooden ball.

Clean it with the brush & air blower and be sure do not to apply water to wash it.

Cleaning and maintenance of K-Pro grinder



Step 6:

Put the wooden ball into the crank handle till you hear a click sound and tighten the pc lid by turn clockwise.

Turn the outer ring burr and the adjustment dial ring counter-clockwise to secure.

K-Plus Grinder


Step 7:

Place the pieces in order to ensure the grinder works perfectly. The central shaft and the burr set fixed together, you need to put it back into the grinder. Before that, you have to place the spring then the bearing cap on the burr set.

Note: the spring is the conical shape in which you need to place the larger surface upward as the opposite of the smaller surface and the protruding side of the bearing cap consider facing upward.

K-Plus Grinder
K-Plus Grinder
K-Plus Grinder

Step 8:

Insert the upper bearing into the adjustment dial ring. Now it is a tricky part, you would notice there is a horseshoe shape appearing from the upper bearing cap. The flat side from the upper bearing cap needs to match the flat side of the central shaft as well.

K-Plus Grinder
K-Plus Grinder

Step 9:

Pressing the burr set and tighten the knurled thumb nut by turning clockwise till you feel a resistance (do not overtighten or it hurt the burr set).

The next and the last step is the calibration, kindly read the post of How to Calibrate 1Zpresso Grinders? from our blog.

K-Plus Grinder
K-Plus Grinder
  • K-Plus Grinder | K-Pro Grinder
  • K-Plus Grinder
  • K-Pro Grinder
  • K-Plus Grinder with the travel case
  • K-Pro with the Cylinder Case
JX-Pro Grinder

How to Clean and Maintain 1Zpresso Manual Coffee Grinder? (Top Adjustment Version)

Greetings, fellow coffer-lovers.

How often that you clean your 1Zpresso manual coffee grinder? 
Proper maintenance could prolong the life of your grinder for a long period of time.
We advise customers to dismantle the grinder once a month to perform cleaning and maintenance.
The grinder could dismantle without any helps from the tool.

Here is a reassemble tutorial for the top adjustment mechanism of JX-Pro & JE-Plus grinder.
You also can find the cleaning and maintenance tutorial of the internal adjustment and external adjustment from our blog.
Below image demonstrating the re-assembly with JX-Pro grinder.


Step 1:

Take out the crank handle, holding the grinder with the non-dominant hand and the other hand to remove the adjustment dial by turning counter-clockwise. And remove the catch-cup.

JX-Pro grinder



Step 2:

Pressing the burr set and loosen the knurled thumb nut by turning counter-clockwise.

JX-Pro grinder
JX-Pro grinder



Step 3:

Take out the burr set by pressing down the central shaft. Collect the sliding column from the upper ring cap where the upper bearing and the upper bearing cap lying inside of it.

JX-Pro grinder
JX-Pro grinder



Step 4:

The upper ring cap can be taken out by turning clockwise. Attaching the catch-cup to remove the outer burr ring by turning clockwise. Note: the outer burr ring unable to remove without taking out the burr set.

JX-Pro grinder
JX-Pro grinder


Step 5:

Take out the pc lid by turn counter-clockwise throughout cleaning. Apply some strength to detach the wooden ball.

Clean it with the brush & air blower and be sure do not to apply water to wash it.

JX-Pro Grinder



The magnetic catch-cup of JE-Plus grinder could be dismantled in three parts. Remove the magnetic attachment ring by turning counter-clockwise. Turn counter-clockwise to separate the closed receiver from the open receiver.

Perform the step reversely to recover the catch-up.

K-Plus Grinder
K-Plus Grinder
K-Plus Grinder
Press to remove for throughout cleaning.


Step 6:

Put the wooden ball into the crank handle till you hear a click sound and tighten the pc lid by turn clockwise.

Turn the outer ring burr and the upper ring cap counter-clockwise to secure.

JX-Pro Grinder


Step 7:

Place the pieces in order to ensure the grinder works perfectly. The central shaft and the burr set fixed together, you need to put it back into the grinder. Before that, you have to place the spring then the bearing cap on the burr set.

Note: the spring is the conical shape in which you need to place the larger surface upward as the opposite of the smaller surface and the protruding side of the bearing cap consider facing upward.

JX-Pro grinder
JX-Pro grinder
JX-Pro grinder

Step 8:

There is a dot at the back of the sliding column. Place the sliding column (which connects the dot at the sliding column to the dot at the adjustment dial) inside the hopper.

Insert the sliding column into the upper ring cap, then the upper bearing.

Now it is a tricky part, you would notice there is a horseshoe shape appearing from the upper bearing cap.

The flat side from the upper bearing cap needs to match the flat side of the central shaft as well.

JX-Pro grinder
JX-Pro grinder
JX-Pro grinder
JX-Pro grinder

Step 9:

Pressing the burr set and tighten the knurled thumb nut by turning clockwise.

Free your hand from pressing the burr set, tighten the adjustment dial to zero by turning clockwise till you feel a resistance (do not overtighten or it hurt the burr set).

The crank handle unable to move dramatically means the grinder in zero settings.

JX-Pro grinder
Fine Adjustment Dial Design - JX-Pro | JE-Plus Grinder
JX-Pro grinder
  • JX-Pro Grinder
  • JE-Plus Grinder

JX Grinder

How to Clean and Maintain 1Zpresso Manual Coffee Grinder? (Internal Adjustment version)

Greetings, fellow coffer-lovers.

Do you take good care of your 1Zpresso manual coffee grinder? 
Proper maintenance could prolong the life of your grinder for a long period of time.
We advise customers to dismantle the grinder once a month to perform cleaning and maintenance.
The grinder could dismantle without any helps from the tool.


Here is a reassemble tutorial for the internal adjustment mechanism of Q2 & JX & JE grinder.
You also can find the cleaning and maintenance tutorial of the top adjustment and external adjustment from our blog.
Below picture using JX grinder demonstrating the re-assembly.

Step 1:

Use your non-dominant hand to grab the top of the grinder and use the dominant hand to remove the catch cup by turn counter-clockwise.

JX Grinder

Step 2:

Turn adjustment counter-clockwise till adjustment dial fell off and remove the burr set. Take it out of the spring and the bearing cap.

JX Grinder

JX Grinder

Step 3:

Attaching the catch-cup to remove the outer burr ring by turning clockwise.

Note: the outer burr ring unable to remove without taking out the burr set.

JX Grinder

Step 4:

Take out the pc lid by turn counter-clockwise throughout cleaning. Apply some strength to detach the wooden ball.

Clean it with the brush and be sure do not to apply water to wash it.

JX Grinder
JX Grinder

Step 5:

Put the wooden ball into the crank handle till you hear a click sound and tighten the pc lid by turn clockwise. Install the crank handle in the central shaft.

Turn the outer ring burr counter-clockwise to secure. Place the pieces in order to ensure the grinder works perfectly. The protruding side of the bearing cap consider facing upward, then the spring.

JX Grinder
There are two sides of the bearing cap,
the flat side and the protruding side.  

Step 6:

Install the burr set adjustment dial by turn clockwise to tighten the grinder till the crank handle unable to move dramatically.

And your 1Zpresso manual coffee grinder is ready to go.

JX Grinder
Be sure to check out the rectangle shape
to install the burr set correctly
JX Grinder
An alternative tutorial for J-Series grinder on YouTube. You can CC for the English subtitle. 
An alternative tutorial for Q-Series grinder on YouTube. You can CC for the English subtitle. 

  • JX Grinder
  • JE Grinder
  • Q2 Grinder - Pentagonal Version
  • Q2 Grinder - Pentagonal Version

K-Plus Grinder | K-Pro Grinder

How to Choose a 1Zpresso Manual Coffee Grinder?

1Zpresso Grinder Selection

Greetings, fellow coffee-lovers. Here we go again.

We consider ourselves a player-type manual coffee grinder company as we are constantly improving the features of the manual coffee grinder based on the feedback from our beloved coffee-lovers.   

I could think of the most common question that we’ve received is:

How to choose a 1Zpresso manual coffee grinder? There are so many of em.
What’s the difference between K-Plus and JE-Plus, I am so confused.
How do I perform the grind setting adjustment?
The mystery had solved.
How do I calibrate my 1Zpresso manual coffee grinder?
Another mystery had solved.
How do I clean and maintain my grinder? (Internal adjustment & Top adjustment & External adjustment)

There are three kinds of adjustment settings from 1Zpresso manual coffee grinder, the classic internal adjustment design (Q2, JX, JE, JS grinder), the minor upper adjustment design (JX-Pro, JE-Plus grinder), and the proudly announced awarded external adjustment design (E-Pro, K-seriesK-Pro, K-Plus grinder).

Besides the Accessories are included in the Pro and Plus tiers grinder.
We are going to reveal all the features of the 1Zpresso manual coffee grinder to clear your wonder. 

Pour-over

Q2 Grinder
One of the favorite items to go camping and hiking with. Nothing beats glazing over the horizon on top of the mountain when you enjoy the coffee-break. A friendly travel-sized grinder with a 38mm burr size could fulfill your daily pour-over coffee needs.

JX Grinder
I would recommend JX grinder to the coffee-lovers who’re mainly brewing pour-over. It employed the large burr as 48mm and the classic internal adjustment resulted in greater grinding efficiency.

Espresso

JE Grinder
I would suggest JE grinder to the coffee-lovers who’re mainly brewing espresso. It is equipped with the burr size of 47mm and the classic internal adjustment.

JE-Plus Grinder
The premium version of JE grinder. The Itamill-coated burr set as 47mm and the minor top adjustment design has 12.5 microns per click which allows you to find the sweet spot of the espresso. And the magnetic catch-cup is ideal for brewing espresso and works well with 51mm and 58mm portafilter.

Pour-over & Espresso

JX-Pro grinder
The advanced version of JX grinder, it shares the same burr design as 48mm, except for the adjustment design. The overall grinder with the fine adjustment design (12.5 microns per click).

K-Pro grinder
The visible external adjustment with 90 clicks per round and the grinding efficiency as the specialized K Burr with 48mm.

K-Plus grinder
It has the same external adjustment design with 90 clicks and the specialized K Burr with 48mm as K-Pro grinder and the same magnetic catch-cup design as JE-Plus grinder with a capacity of 35~40g.

1Zpresso manual coffee grinder

The Grinding Result of 1Zpresso Grinder

We ran some grinding tests for the grinders with the 15g light-roasted coffee beans on Nov 19, 2020.
We thoughts it might help the coffee-lover to clear the wonder about the grinding consistency, it is not a professional test for particle distribution though.

Pour-over

1Zpresso Q2 grinder
Q2
1Zpresso JX grinder
JX

Espresso

1Zpresso JE grinder
JE
1Zpresso JE-Plus grinder
JE-Plus

Pour-over & Espresso

1Zpresso JX-Pro grinder
JX-Pro
1Zpresso K-series grinder
K-Series

How to Calibrate 1Zpresso Grinders?

Calibration of 1Zpresso Grinders

There are three types of adjustment designs for 1Zpresso grinders, including internal adjustment, top adjustment and external adjustment. Many people might be curious about how to calibrate each of them. Therefore, today we’re going to explain to you.

How to Find the Zero Point / Starting Point?

First of all, we would like to define the zero point / starting point of our grinders. Turn the adjustment dial clock-wise all the way to find the zero point / starting point of the grinders. We define it to be at the point which the crank handle won’t rotate drastically instead of its tightest.

Internal Adjustment

Q2 / JX / JE

For people who have the Q2 / JX / JE, which are equipped with the internal adjustment, congratulations, you’ve already found the starting point by turning the adjustment dial clockwise till the crank handle won’t rotate drastically. The numbers on the dial are designed for counting how many steps you’ve turned and therefore the starting point is not necessary to be at #0.

Top Adjustment

JX-Pro / JE-Plus

Generally, the top adjustment shares the same concept with the internal adjustment that the numbers on the dial are designed for counting how many steps you’ve turned and therefore the starting point is not necessary to be at #0. However, if you would like to set the starting point to #0, please follow the few steps below:

Step 1. When the dot points to #1/#2/#3 instead of #0 at the tightest, please simply remove the adjustment nut (by twisting it counterclockwise).
Step 2. Adjust the knurled thumb nut counter-clockwise by 1/2/3 clicks.
Step 3. Screw back the adjustment nut and the starting point should be at #0 (±2 clicks).

Fine Adjustment Dial Design - JX-Pro | JE-Plus Grinder

External Adjustment

K-Pro / K-Plus

For the K-Pro and K-Plus, to set your grinders to zero, please follow these steps:

Step 1. Tighten the adjustment dial counter-clockwise and ensure the gap inside is fully closed.

K-Plus Grinder

Step 2.

  • If the red dot is at the right of #0, loosen the adjustment dial clockwise a little bit, push the burr from the bottom and loosen the knurled thumb nut counter-clockwise.
  • If the red dot is at the left of #0, note the clicks of distance from #0 (for example, 12 clicks), loosen the adjustment dial clockwise a little bit, push the burr from the bottom and tightened the knurled thumb nut counter-clockwise by 12/2 = 6 clicks.


Step 3. Repeat step 1 and 2 until the red dot points to #0.

Calibration of external adjustment | K-Pro | K-Plus Grinder

1Zpresso Classic Internal Adjustment Dial

How to Set 1Zpresso Grind Settings?

1Zpresso Grind Settings Tutorial

Greetings, fellow coffee-lover.

Do you know how to read the grind setting reference of the 1Zpresso manual coffee grinder? 
Here is the tutorial for y’all to learn. 

I personally tired of carefully adjusting the grinder when there are many clicks without knowing where it was. 

All the burr in the grinder was calibrated by the 1Zpresso team to ensure maximum stability over time.
The outer ring and the burr were built through precision finishing so tolerance was expected as the first few clicks of the outer ring and the burr would touch. The constant touching will damage the burr set.

Many of you know there are many models of 1Zpresso manual coffee grinder.

How to find the Zero Settings?

It is effortless to observing the external adjustment design, where you could just notice the red dot point at.

I reckon it is easy for the internal and top adjustment design as well, you adjust the adjustment dial clockwise till you feel a resistance to stop, that’s the zero settings.

These three kinds of adjustment design share a common point on representing your grinder at zero settings which are the crank handle unable to move drastically.

1Zpresso Manual Coffee Grinder

Adjustment design of 1Zpresso Manual Coffee Grinders

1Zpresso Grinders Adjustment Numbers per rotation Clicks per rotation Clicks per number MM per click
Q2 & JX & JE Internal 10 numbers 30 clicks 3 clicks 0.025mm
JX-Pro & JE-Plus Top 10 numbers 40 clicks 4 clicks 0.0125mm
K-Plus & K-Pro External 9 numbers 90 clicks 10 clicks 0.022mm

Internal Adjustment Design

Q2, JX, JE Grind Setting Reference Tutorial

0.5 rotation = turn counter-clockwise 5 numbers. (15 clicks)
0.7 rotation = turn counter-clockwise 7 numbers. (21 clicks)
1 rotation = turn counter-clockwise around. (30 clicks)
1.4 rotations = turn counter-clockwise around and 4 numbers.
(42 clicks)
2.5 rotations = turn counter-clockwise 2 rounds and 5 numbers.
(75 clicks)

1Zpresso Classic Internal Adjustment Dial
Fine Adjustment Dial Design | JX-Pro | JE-Plus Grinder

Top Adjustment Design

JX-Pro & JE-Plus Grind Setting Reference Tutorial

0.8 rotation = turn counter-clockwise 8 numbers. (32 clicks)
1.5 rotation = turn counter-clockwise around and 5 numbers.
(60 clicks)
2.8 rotations = turn counter-clockwise 2 rounds and 8 numbers.
(112 clicks)
3.6 rotations = turn counter-clockwise 3 rounds and 6 numbers.
(144 clicks)
4.8 rotations = turn counter-clockwise 4 rounds and 8 numbers.
(192 clicks)

External Adjustment Design

K-Plus and K-Pro Grind Setting Reference Tutorial

1.5 numbers = turn clockwise to #1 and 5 clicks. (15 clicks)
3.2 numbers = turn clockwise to #3 and 2 clicks. (32 clicks)
8.6 numbers = turn clockwise to #8 and 6 clicks. (86 clicks)
10 numbers = turn clockwise one full round to #0 and 1 number.
(100 clicks)

Setting External Adjustment- K-Pro | K-Plus grinder


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