Fellow Opus:
Espresso Grind Settings & Guide
The Fellow Opus is an electric conical burr grinder with 40mm burrs. It features stepped adjustment (~25µm per step) and is designed for both espresso and filter use. With moderate retention (~0.8g) and a hopper-fed design, it's a popular choice from Fellow.
At a glance
Fellow Opus specs
Burr Type
Conical 40mm
Adjustment
Stepped
Step Size
~25µm per step
Retention
Medium (~0.8g)
Single Dose Friendly
No
Espresso Capable
Yes
Primary Use
Espresso & Filter
Power
Electric
Espresso starting range
Where to start for espresso
steps 1–3 for espresso
numbered steps — outer ring for macro, inner ring for micro (e.g. 'try 3.2')
Starting point only — adjust based on your beans, roast level, dose, and target yield.
Quirks & tips
Good all-rounder — espresso to cold brew
Smaller burrs than premium espresso grinders
Detailed notes
All-purpose grinder. Conical burr, macro/micro adjustment. Espresso capable at finer settings (1–3). Purge a few grams before shots due to medium retention.
Dialing in with the Fellow Opus? Grindset speaks your grinder's language.
Tell Grindset which grinder you use and it gives you adjustment advice in Fellow-specific terms — exact steps, not generic "grind finer" advice.
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Manufacturer
Fellow
Burrs
Conical 40mm
Adjustment
Stepped
Retention
Medium (~0.8g)
Primary Use
Espresso & Filter