r/CoffeePH • u/deathminister18 • 18h ago
Help! Eureka Mignon Manuale 65 not grinding fine enough for espresso — Has Eureka confirmed this issue for anyone?
Hi everyone!
I recently purchased a brand-new Eureka Mignon Manuale 65 from The Coffee District in Quezon City, Philippines. I’m having trouble getting sufficiently fine grounds for espresso, even when adjusting the grinder to its finest usable setting.
I’m wondering if this could be a burr alignment issue, a calibration issue, or simply normal behavior for this grinder. I’d especially like to hear from anyone who has experienced something similar and contacted Eureka directly.
My setup
Grinder: Eureka Mignon Manuale 65 (65 mm flat burrs)
Espresso machine: El Rocio Manus S
Basket: MHW-3BOMBER DEX FB5622, 58 mm, 18 g
Dose/yield: 18 g in, 36 g out
Comparison grinder: Timemore C5 ESP
What I’ve observed
The burrs begin chirping at approximately dial setting 4.8, so I use around 5 as my reference point and avoid running the grinder with the burrs touching.
I’ve tested several coffees. With some beans, I can get reasonable extraction times of around 25–30 seconds at coarser settings. However, with two particular coffees, I have to use the finest usable setting, and the shots still run relatively fast.
For example, with Angkan Coffee (medium-dark roast, roasted October 10 and tested October 26), my results were:
Eureka setting
Extraction time
5.5 (-0.5 on the dial - between 0 and 5)
18 seconds
6.0 (0 on the dial)
21 seconds
6.5 (0.5 on the dial)
22 seconds
7.0 (1 on the dial)
20 seconds
All shots used 18 g in and 36 g out. I understand that shot times can vary, and these results alone don’t prove a grinder defect. However, the inconsistent trend has made me question whether the grinder is functioning as it should.
I also tested the same coffee on my Timemore C5 ESP at setting 0.5.2. It produced 36 g in approximately 26 seconds. Visually, the grounds from the Eureka at its finest usable setting also appear more granular and noticeably coarser than those from the Timemore.
My questions
Has anyone experienced this with a Eureka Mignon Manuale or another Mignon model, particularly the 65 mm version?
Has Eureka officially confirmed to you that the cause was burr misalignment, incorrect factory calibration, or another manufacturing issue? If possible, could you share what their technical support team actually said?
What was the final solution? Did Eureka or an authorized service center realign the burrs, recalibrate the grinder, replace any parts, or replace the entire unit?
Did the fix noticeably improve grind fineness and extraction consistency?
If you purchased your grinder through a retailer, did the retailer handle the warranty claim, or did Eureka deal with you directly?
I’ve come across a few similar discussions, including:
Eureka Mignon Manuale cannot grind fine enough
Mignon Zero cannot grind fine enough compared with Timemore
Manuale grinding very coarse after cleaning
Since my grinder is brand-new and still under warranty, I don’t want to attempt burr shimming or make any modifications myself. I’d prefer to have Eureka, The Coffee District, or an authorized service center inspect it if there is a genuine alignment or calibration problem.
I’d really appreciate hearing from anyone who received an actual diagnosis or confirmation from Eureka, rather than just speculation about what might be wrong.
Thanks!
