ARO Espresso Grinder Setting Dial for Eureka Mignon | Solid Aluminum Knob

This fits perfectly on my Eureka Libra GBW. Install is super-easy. It is excellent quality. Makes it so easy to adjust the grind setting compared to the factory knob. I 1000% recommend this! As a side, it would be awesome if Aro offered anodized colors.

I saw a video with this addition to somebody's Eureka Mignon grinder and when somebody else asked about it, they linked here. I had to go get one. I've loved my Mignon Facile grinder, but the one frustrating element has been the tiny hard-to-fine-adjust fineness knob. Making a really small nudge can make a noticeable difference in grind, but it can be hard to make such a small adjustment with the small knob. This new knob is larger and also shows the degree of adjustment more clearly and granularly on the much larger included indicator that surrounds the hopper. I've found it far easier now to make exactly the adjustment I need to get from, say, slightly too coarse so that I'm getting a 17 second shot to just right in the 25-35 second range. I can more precisely move it the right degree to get to my desired result. Besides the great increase in functional utility, this mod is solid, made out of a quality painted aluminum that feels nice and will last along with this well-built grinder. It also looks great. The printing on the knob and the large indicator is attractive and clean and easy to read. It makes the grinder look a lot better. I've paired it with a single-dosing bellows attachment that replaces the big bulk hopper and the whole thing looks great. There are replacement knob projects available on the various 3D printing model websites. I've tried two of those and they looked OK, but those tend to slip over the existing knob and require attachment of a separate arrow to point to the coarseness number. I was never able to get the slip-over knob to securely attach -- rather, it would sometimes slip and make adjustment uncertain. Also, the plastic isn't as solid and doesn't look as nice. This alternative aluminum upgrade uses a complete replacement for the knob so it won't slip. It turns the grinder mechanism exactly as the original knob, but with the larger visual and easier control. If you have any of the Eureka Mignon models that are compatible with this upgrade, I highly recommend it.

This is just a perfectly designed piece of gear. Fits perfectly - nothing to glue on or change; made of high-quality materials (metal knob), and most importantly, makes dialing in a shot with this grinder much much easier. Was about to return my grinder out of frustration but glad that I kept it. On top of that, ARO has made a very easy to follow instructional video that you simply watch (no wasted paper instructions). A++

This is a well-made, quality product that addresses what some feel is a shortcoming on the Eureka Mignon grinders—the grind size selector feature. On the original dial, it's never clear exactly where you are since the wheel must make several full revolutions to cover the range of the burrs from fine to coarse. The ARO attachment solves that problem in an easy to use way. Two drawbacks to the ARO. 1. You must raise the back of the plate to access the screw that secures the hopper. 2. You lose your setting when you remove the top of the grinder for cleaning. Number 1 is an easy fix. I removed the hopper screw and the hopper stays in place fine without it. Number 2 is not. Fortunately, it's not necessary to remove the top often, and resetting the dial setup is a fairly easy proposition. The ARO is a great upgrade for your Mignon grinder.

I returned it because it does not give you the full grinding range. The product is well-made, and I was very unhappy that I had to return it. I use the full range of my Mignon grinder, all the way from ultra-coarse for cold brew to ultra-fine for Turkish, and the gear ratio on the small knob is not fine enough to reach these two extremes. It's simply not possible to use this to get the full range of grind adjustment. If you only switch between espresso and drip I'm sure it's a great product, but it did not work for my use case.

Which is your ability to measure and replicate a grind setting. This mod is tight fitting, and has a nice metal knob. It does enable repeatable grinds. I’m able to go to 20 (quite fine) for one of my espresso blends, and then 70 for a reverse brewer I have, then back to 20 and still get a 27ish second extraction on my gaggia classic pro espresso machine. This showcases the use-case for this mod; if you switch grind settings often and need to be able to go back. This does not come without some minor flaws though. While the knob and dial plate is metal, the dial housing is plastic and the dial gear/base (not viable) is obviously 3D printed. I think the cost of this mod is a bit too expensive. Regardless, it still may be worth the added functionality. This mod kit pays for itself by saving me beans from dialing in. Is it worth it for you?

My goodness. This makes dialing in night and day. Super easy precision. I will be going between double shots, 18 g in, for moring cap and 7 gram shots for an afternoon Italian 3 sip shot. Once I know the precise number on the huge dial, going back and forth should not require re calibrating the shot, I can nail the number. Dialed it in on second shot with this precision, not messing around wasting 4 or 5 baskets of expensive grounds. This transforms the machine. Also added the hopper and blower so at most .1 g retention. At $1.59 per ounce for this coffee, it will offset it's cost and I don't have to waste a few grams to clear out what remained in the machine before pulling the next shot. I pump through the grind then a few after grind is finished to clear out that coffee and eliminate retention.

This is a wonderful addition to my Eureka Silenzio grinder. It makes the grind selection a lot more precise and easy to read. The installation process is very easy. Eureka should have made this design change for their grinders.

Great upgrade to my grinder

A little expensive for what it is, but it's very well made so I can't complain too much. The dials that ship with most of the Mignon grinders are very difficult to use, especially in small increments. This completely fixes that problem and looks great on the grinder. It fits like it's a factory-made accessory.

Bien que certaines parties soient en pla imprimé 3d, la qualité est très bonne et le rendu une fois installé fait très qualitatif.

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