Introduction
Thank you for choosing the STONE M2E Domus Espresso Coffee Grinder. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new grinder. Please read these instructions carefully before first use and keep them for future reference.
Important Safety Instructions
- Read all instructions before using the appliance.
- Do not immerse the appliance, cord, or plug in water or other liquids.
- Close supervision is necessary when any appliance is used by or near children.
- Unplug from outlet when not in use, before assembling or disassembling parts, and before cleaning.
- Avoid contact with moving parts.
- Do not operate any appliance with a damaged cord or plug or after the appliance malfunctions, or has been dropped or damaged in any manner.
- The use of attachments not recommended or sold by the manufacturer may cause fire, electric shock, or injury.
- Do not use outdoors.
- Do not let cord hang over edge of table or counter.
- Do not let cord contact hot surfaces.
- Check the hopper for the presence of foreign objects before using.
- This appliance is for household use only.
Parts Overview
Familiarize yourself with the components of your STONE M2E Domus grinder.

Image 1: Overview of the STONE M2E Domus Espresso Coffee Grinder. This image displays the main unit, the bean hopper on top, and the portafilter holder at the front. The grinder features a sleek, modern design.
- Bean Hopper Lid
- Bean Hopper
- Grind Adjustment Collar
- Grinder Body
- Grind Outlet
- Portafilter Holder
- Power Button / Start Button
- Power Cord (not shown)
Setup
- Unpacking: Carefully remove all packaging materials. Inspect the grinder for any damage. Keep packaging for future transport if needed.
- Placement: Place the grinder on a stable, flat, and dry surface. Ensure there is adequate ventilation around the unit.
- Cleaning: Before first use, wipe the exterior of the grinder with a damp cloth. Wash the bean hopper and lid with warm, soapy water, rinse thoroughly, and dry completely. Ensure all parts are dry before assembly.
- Assemble Hopper: Place the clean, dry bean hopper onto the grinder body. Ensure it is seated correctly and securely.
- Connect Power: Plug the power cord into a grounded electrical outlet. Ensure the voltage matches the specifications of the grinder.
Operating Instructions
1. Filling the Bean Hopper
- Remove the bean hopper lid.
- Pour fresh, roasted coffee beans into the hopper. Do not overfill.
- Replace the bean hopper lid securely.
2. Adjusting Grind Size
The STONE M2E offers a wide range of grind settings suitable for various brewing methods, from fine espresso to coarse French press. For espresso, a very fine grind is typically required.
- To adjust the grind size, rotate the grind adjustment collar.
- Rotate clockwise for a finer grind.
- Rotate counter-clockwise for a coarser grind.
- It is recommended to adjust the grind size only when the grinder is running or completely empty to prevent burr damage.
3. Grinding Coffee
- Ensure the portafilter holder is correctly positioned under the grind outlet.
- Place your portafilter into the holder.
- Press the power/start button to begin grinding. The grinder will dispense ground coffee directly into your portafilter.
- Press the button again to stop grinding, or the grinder may have a timed grinding feature (refer to specific model features if applicable).
- Remove the portafilter and prepare your espresso.

Image 2: The STONE M2E grinder in action, demonstrating coffee being ground into a portafilter. This shows the typical use case for espresso preparation.
Maintenance and Cleaning
Regular cleaning ensures optimal performance and extends the lifespan of your grinder.
Daily Cleaning
- After each use, brush away any residual coffee grounds from the grind outlet and portafilter holder using a soft brush.
- Wipe the exterior of the grinder with a clean, damp cloth. Do not use abrasive cleaners.
Weekly / Bi-Weekly Deep Cleaning
- Unplug: Always unplug the grinder from the power outlet before cleaning.
- Remove Hopper: Empty any remaining beans from the hopper. Remove the bean hopper by rotating it counter-clockwise and lifting it off.
- Clean Hopper: Wash the bean hopper and lid with warm, soapy water. Rinse thoroughly and dry completely.
- Clean Burrs:
- Locate the upper burr assembly. Depending on the model, this may involve rotating a locking mechanism or unscrewing a component.
- Carefully remove the upper burr.
- Use a stiff brush (often provided with the grinder) to clean both the upper and lower burrs, removing all coffee residue.
- Do not wash burrs with water.
- Clean Grind Chamber: Use a brush or vacuum cleaner to remove grounds from the grind chamber.
- Reassemble: Reinstall the burrs and bean hopper, ensuring all parts are securely in place.
Note: Never immerse the main grinder body in water or any other liquid.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Grinder does not start. | Not plugged in; power switch off; safety interlock not engaged. | Ensure power cord is securely plugged in. Check power switch. Ensure bean hopper is correctly seated. |
| Grinder stops during operation. | Overload protection activated; foreign object in burrs; motor overheating. | Unplug and let cool for 30 minutes. Remove any foreign objects. Reduce amount of beans. |
| Inconsistent grind. | Burrs are dirty or worn; grind setting too coarse/fine. | Clean burrs thoroughly. Adjust grind setting. Consider replacing burrs if worn. |
| Grinder is very noisy. | Foreign object in burrs; burrs not properly seated. | Unplug and inspect burrs for foreign objects. Reassemble burrs correctly. |
Specifications
- Model: STONE M2E Domus
- Brand: Stone
- Product Name: Espresso Coffee Grinder
- Material: Stainless Steel
- Dimensions (Packaging): 45.8 x 30.9 x 21.1 cm (18.0 x 12.2 x 8.3 inches)
- Weight (Packaging): 6.12 kg (13.49 lbs)
- Color: Grey (Note: Specific color may vary by model variant)
- Recommended Use: Grinding coffee beans for espresso and other brewing methods.
- ASIN: B09WVTPW3S
Warranty and Support
For warranty information and customer support, please refer to the warranty card included with your product or visit the official Stone website. Keep your proof of purchase for warranty claims.
If you encounter issues not covered in the troubleshooting section, please contact Stone customer service for assistance.





