MHW-3BOMBER Magnetic Dosing Ring 58 mm – light and clean dosing
A brief touch and the ring is in place: ten magnets pull it onto the rim of your portafilter. You grind straight into it, the grounds land in the basket instead of on the drip tray, and after distributing you lift the ring off again with two fingers.
The dosing ring from MHW-3BOMBER is made of an aluminium alloy and, according to the manufacturer, weighs around 37 g. You can buy it from us in Switzerland, with Click & Collect in Bern and Zurich.
Features
Ten magnets on the rim
Ten magnets sit at equal distances in the ring. They pull it onto the rim of your portafilter, so it sits securely and does not fall off while dosing.
Hooked onto the outside of the basket
The ring hangs at the bottom on the outside of the basket rim and takes up no space in the basket. According to MHW-3BOMBER, this enlarges the area on which the grounds land, and after removal no depression remains at the edge of the coffee bed.
Funnel-shaped opening
The opening flares out towards the top. That way the ring also catches grounds that would otherwise fall next to the basket, and your work surface stays clean.
Light aluminium alloy
The ring is made of an aluminium alloy, rust-resistant and corrosion-resistant according to the manufacturer. At around 37 g it is very light. If it falls, according to the manufacturer the counter will not be damaged either.
The details in everyday use
Stirring inside the ring
The manufacturer recommends four steps: attach the ring, fill in the grounds, loosen clumps with a WDT tool, remove the ring and carry on as usual. Because the ring stays on while you stir, you do not push anything over the rim.
Will it hold on your portafilter?
The ring is made for 58 mm portafilters. Magnets only hold on a magnetic rim. According to MHW-3BOMBER, the ring may therefore not fit portafilters made of wood, aluminium or non-magnetic stainless steel. If you are unsure, briefly hold an ordinary magnet to the rim of your portafilter: if it sticks, the ring will hold too.
Cleaning
In our experience it is enough to knock out the ring after grinding and wipe it with a damp cloth now and then. Then let it dry well.
At a glance
| Brand |
MHW-3BOMBER |
| Type |
Magnetic dosing ring |
| Fits |
58 mm portafilters with a magnetic rim |
| Magnets |
10, at equal distances |
| Attachment |
at the bottom on the outside of the basket rim |
| Shape |
flared like a funnel at the top |
| Material |
aluminium alloy, magnets |
| Weight |
approx. 37 g |
| Colour |
black, matte |
| Origin |
China |
| In the box |
1 dosing ring |
Who it is made for
For you if you grind straight into the portafilter and then have to wipe the counter. For everyone who stirs before tamping and does not want to push anything over the rim. And for everyone looking for a simple, light tool that simply disappears into the drawer after use. If you are still looking for the right machine or grinder, our advice tool for coffee machines will help you.
What goes with it
You will find more rings and funnels under dosing funnels: if you want them affordable and precise, look at Normcore; if you want a heavy piece of craftsmanship in your hand, at Weber Workshops. For stirring inside the ring, there are tools in our WDT tools, compact from Normcore or the Moonraker from Weber Workshops. For tamping afterwards you will find models under tampers, and the right grinder under coffee grinders. Everything from the brand is under MHW-3BOMBER. And if you are unsure what suits your setup, our advice tool will help you.
Frequently asked questions
Which portafilters does the dosing ring fit?
It is made for 58 mm portafilters and holds on the rim with ten magnets. The rim has to be magnetic for this.
Does the ring take up space in the basket?
No. It hangs on the outside of the basket rim, the basket itself stays free.
What is the dosing ring made of?
An aluminium alloy in matte black. That makes it very light.
How do I clean the ring?
Knock out the coffee and wipe the ring with a damp cloth now and then. Then let it dry well.
How quickly will the dosing ring be delivered?
Delivery takes 2–5 working days, throughout Switzerland and to Liechtenstein. Click and Collect is available in Bern and Zurich.
Can I see the ring before buying?
Our showrooms in Bern (Gerberngasse 44) and Zurich (Hagenholzstrasse 50b) show a wide selection, but not our entire range – the display changes. It is best to ask us briefly beforehand whether the ring is on site.
Tip from the roastery: When you grind straight into the portafilter, the coffee sits as a mound in the middle. In our experience it pays to stir with the ring on and only then take it off, so nothing falls over the rim when you lift it. For the portafilter we recommend Cozy Chocolate and Nutty Delight: dense, round and chocolatey. For a strong espresso with milk, Very Nutty fits, with plenty of body and hardly any acidity. And if you want to discover something fruity, you will find it in Wild Peach. You will find all our coffees under coffee beans. That is our recommendation, one of many.
