Adjustment
Burrs and dialing in: make the adjustments useful
A burr specification tells you something about the grinding mechanism. It does not tell you, by itself, how easy the grinder will be to adjust for your coffee. For a useful comparison, separate the burrs, the range of adjustment and the controls you will use to make the next small change.
Read burr descriptions in the context of the brewer
Do not turn “flat,” “conical” or a diameter in millimeters into an automatic ranking. The exact burr set and the grinder's intended job matter. A useful review should identify the installed configuration and say which brewing methods the maker supports. A different optional burr set deserves its own compatibility check.
For example, Fellow's Ode Gen 2 page distinguishes its standard Gen 2 Brew Burrs from an SSP MP option, while excluding espresso from the grinder's intended use. An upgrade name should not silently change the brewing-method requirement in your shortlist. Start with the documented application before deciding whether an optional part matters to you.
Understand what one adjustment does
A stepped control provides discrete positions that can be convenient to record. A stepless control allows movement between marked positions, which can help when you want a smaller change. A grinder may combine both approaches. The Sette 270 manual identifies a macro adjustment and a stepless micro adjustment; its saved time buttons are separate controls.
Ask yourself two practical questions: can I make a small enough change for my brewer, and can I find my previous setting again? Someone staying with one espresso recipe may value the first most. Someone switching between brewers several times a day may care equally about the second.
A large total setting count is not a measurement shared between brands. Marks are coordinates within that machine's system. Even a friend's number on the same model is only a starting point, because the coffee and preparation may be different. Keep your own notes rather than searching for a universal conversion chart.
Dial in with a small, controlled comparison
Begin with the manufacturer's suggested range for your brewing method. Keep the coffee dose and the brewer's recipe consistent while you compare a modest grind change. Record what you changed and whether you preferred the result. If you alter grind, dose and water together, it becomes difficult to know which change helped.
For espresso, record the beverage amount and the observed shot behavior as well as taste. For a filter brewer, note any unusual draining behavior and whether the cup improved. These observations help you decide what to try next; they do not turn every sour or bitter cup into proof of a single cause.
Adjustment and calibration are different jobs
Normal adjustment selects the grind for a brew. Calibration or an internal range change alters the relationship between the mechanism and its markings. Do not start dismantling or shifting internal parts simply because an online recipe uses a different number. Use the exact model's troubleshooting instructions or contact the maker when the available range seems wrong.
Also check the required operating state before turning a control. The KM5 manual, page 11 instructs users to activate the grinder before adjusting on subsequent use. That is a model-specific operating instruction, not permission to service a powered grinder.
Choose the adjustment system you can use confidently. A complicated control is not a benefit if you cannot remember what it changes, and a simple control is not enough if it cannot make the change your brewer needs.
For concrete examples, the Sette 270 review examines separate macro and micro controls, while the KM5 review keeps a stepless brew grinder's intended use clear.