MHW-3BOMBER Flash Tamper 51 mm – calibrated tamper for 51 mm machines
Compact 51 mm machines are often shipped with a light, flat stock tamper – and this is exactly where a calibrated tamper makes a real difference. Press down, hear the quiet click, and the puck is evenly compacted, every single time.
The 51 mm version of the Flash – for DeLonghi, Smeg, La Pavoni and other 51 mm portafilters.
Why even tamping counts
During the shot, water looks for the easiest path through the puck. If it's compacted unevenly, the water moves faster where it's looser – extraction becomes uneven. A consistent, always equally firm tamp is the foundation for that; on the small 51 mm baskets, a clean tamp really stands out.
The Flash works with a three-spring system that holds a constant pressure of around 30 lbs, confirmed by a quiet click. A 15 lb spring is included for lighter pressure. The titanium base is robust, has an antistatic effect and holds back less loose grounds, while the handle combines wood and metal. Tamping is a craft, not a rulebook – the Flash just makes it more repeatable. Our opinion is one of many.
At a glance
| Type |
spring-loaded, calibrated tamper |
| Base diameter |
51 mm (for 51 mm portafilters) |
| Pressure |
constant around 30 lbs, with audible click |
| Springs |
three-spring system, additional 15 lb spring included |
| Base |
Titanium, antistatic and robust |
| Handle |
Wood and metal |
Who it's for
For anyone with a 51 mm machine such as DeLonghi, Smeg or La Pavoni who wants to swap their stock tamper for a calibrated tool. The audible click keeps the tamp consistent – without having to keep track of the pressure in your head.
What you pair it with
An even tamp works together with the rest of your setup. Affordable tamping stations, puck screens and WDT tools are in the Normcore Collection and especially finely crafted ones in the Weber Workshops Collection.
More tampers to compare are in our Tamper Collection. And because the best tamp only really pays off with the right machine, it's worth taking a look at our espresso machines – supported by our advisory tool.
Frequently asked questions
Does the 51 mm tamper fit my machine?
It's made for common 51 mm portafilters, such as those from DeLonghi, Smeg or La Pavoni. If in doubt, check the inner diameter of your filter basket.
Is a calibrated tamper worth it on a small machine too?
Especially there. Many 51 mm machines come with a light stock tamper; an even, calibrated tamp makes the shot noticeably more consistent.
Can I adjust the pressure?
Yes. Alongside the standard spring, a 15 lb spring is included in case you prefer to work with lighter pressure.
Can I see the tamper in person before buying?
Very happily — you can experience it live in our showrooms in Bern (Gerberngasse 44) and Zürich (Hagenholzstrasse 50b). Online, we deliver in 2–4 business days, throughout Switzerland and to Liechtenstein.
Tip from our coffee roastery
An even tamp really shows in full-bodied, sweet roasts. Our Cozy Chocolate and Nutty Delight taste round and forgive a lot. For maximum body without acidity, the Very Nutty, for a fruity experience, the Wild Peach. That's our recommendation – one of many.
