3D Printing

Improving the Eureka Mignon Grinder with 3D Printed Accessories

Since I started working from home I have been thankful to have a Breville espresso machine that has kept me caffeinated through tough problems and tight deadlines. This machine is a combo espresso machine and grinder. This is nice because it’s compact but does come with some tradeoffs mainly on the grinder side. It only has 10 steps so lacks the variability of an infinite adjustment for more difficult roasts and I have noticed that if you leave the machine running for too long the grinder heats up along with the rest of the machine which changes the grind profile resulting in faster shots.

Now that I have been getting into espresso more I was thankful to receive a Eureka Mignon Notte grinder from my brother for Christmas! I was also surprised to hear that there were some 3D prints that the community of espresso enthusiasts has created and shared online for free on Thingiverse. The two designs I chose were a tray to catch the loose grounds so I would not need to clean the counter every time, and a single dose hopper to make adding beans to the grinder faster as the clear hopper it ships with has a large volume that I do not need for single dosing.

Thingiverse: Eureka Mignon single-dose hopper and bellows

Thingiverse: Eureka Mignon Tray – Specialita, Silenzio, Perfetto

So I decided to try my hand at printing them on my Prusa Mini, and wow did they turn out great! Both of these printed perfectly on the first go, I was a bit concerned about the tray warping as it is a large flat surface covering most of the printer bed. but using isopropyl alcohol to wipe the bed before printing made sure the part stuck well to the bed. The hopper was a breeze but took longer to print due to the vertical volume. All together I think I was done in about 9 hours for both.

Take a look at the results below.

I then needed to try them out, of course, made a latte in my favorite Hackaday Supercon Mug! You might notice that I am using a small cup for a lid on the single-dose hopper. This is actually a cup that comes with the Costco brand tiramisu desserts. The tray is also really nice as it slides underneath the grinder and actually clips in a bit to keep it attached.

I then attempted to make a second tray for my brother since he has a similar Eureka grinder but in black. On the first go the print failed due to my ancient PLA filament but thankfully I had another spool that wasn’t too far gone and actually got a good print out of it. I think this is due to the age of the material since I think it was opened around 2015 and not stored in the proper conditions…..

Conclusion

It has only been a few days but it was a nice “end of vacation” project, plus it got me to start 3D printing again. I am also super impressed by both of the designs up on Thingiverse they basically worked right out the gate. I might take the time and try remixing these designs or if I can think of something create my own accessory for the Eureka Mignon grinders. The sky is the limit I suppose, now to make more coffee!

Filament Material

Prusa Mini Config File