Adjusting the Grind Size
Large changes in grind size are made by turning the Stepped Adjustment Disk (SD) to the desired number.
Each step is 100 Microns (µm) VBM. The SD is self locking.
Micro Disk (MD) adjustment Procedure:
Small changes in grind size are made by loosening the Micro Adjustment Locking Pin and turning the MD in the desired
direction - Align the Micro Disk Reference Mark (MDR) to the Micro Scale Center Mark (CM). Hold the handle still
with one hand, and move the disk with the other. Tighten pin firmly after adjustment.
Each MARK on the Micro Adjustment Disk Scale equals 5µm of VBM.
Moving the MDR in the COARSE direction (C) ADDS to the MD setting (+µm).
Moving the MDR in the FINE direction (F) SUBTRACTS FROM the MD setting (-µm).
Dialing in for your target grind size is like any other
grinder - set, grind, observe, test, & adjust.
Fine tuning between the SD Setting is done
using the Micro Adjustment Disk (MD)
Example1:
SD= 500µm
MD= 2 marks C (10µm Coarse direction)
Setting = 500µm + 10µm = 510µm
Example 2:
SD= 500µm
MD= 4 marks F (20µm Fine direction)
Setting = 500µm - 20µm = 480µm
The MD Scale has a total of 100µm of marked adjustment: - 50µm in the Fine, and 50µm in the Coarse direction.
For larger changes use the SD to move a step, then adjust the MD.
Over extending the MD setting beyond the 50µm on each side makes all of your VBM numbers less meaningful...
Example 3:
Target 580µm Use 600µm SD minus 20µm F MD adjustment. NOT 500µm SD plus 80µm C MD.
You will generally be using the stepless Micro Disk for espresso. The layout of the Micro Disk Adjustment Scale is a
reflection of the use of this Disk in dialing in an espresso grind. We recommend you write down your setting as you
dial in. If you have changed the Micro setting keep track of how far you have moved it, and in which direction.
In order to maintain meaningful numbers you will need to move the MDR Mark BACK to the Center Mark - in other
words, if you subtracted microns by moving the Micro Disk in the fine direction you need to move back in the coarse
direction the same amount to maintain a relevant zero.
Example 4:
OG is set at 540µm (500µm SD+ 40µm MD C) You want to change it to 570µm. You NEED to move the MD back 40µm in
the F direction to the original position, THEN move the SD to 600µm, and the MD to 30µm F.
600µm - 30µm = 570µm (the desired target).
It really is a lot easier to do it than it is to write about it...
Changes made on the MD will always be reflected in the overall setting - SD & MD always work together.
Example 5:
Espresso Setting 540µm. If you change ONLY the SD from 500µm to 900µm, and do not move the MD setting,
the total setting will move from 540µm to 940µm.
If you lose track of your settings it’s very easy to rezero the Micro Disk - See page 5.
Micro Disk Reference Mark (MDR)
Micro Scale Center Mark (CM)
-µm +µm
Stepped Disk (SD)
Micro Disk (MD)
2
