What is a bottomless portafilter?
Well to say it plain simple. You take a regular portafilter and you drill/machine the bottom out of it. And now you have a naked portafilter. The benefit of this type of portafilter is that the coffee does not have any contact with the portafilter. Seen it flows from the filterbasket into the coffee cup.
Naked portafilter
The naked portafilter, or allso called a bottomless portafilter, is nowadays available in a variety of sizes with various types of coffee filterbasket. The advantage of having no bottom in your portafilter is that you now can also use a taller filterbasket, which can contain more ground coffee.
Most common type of bottomless portafilter
58mm bottomless portafilter
The 58mm portafilters are the most common types of portafilter. This all starts with the Faema portafilters, seen the e61 style of brewing group is for a lot of espresso machine manufacturers the standard brewing group. You can find this size on brands such as Rocket, Bezzera, Nuova Simonelli and Vibiemme. Note: this does not mean that they are all interchangeable with each other, seen the thickness of the ears can differ.
How to clean your bottomless portafilter
The cleaning of your bottomless portafilter is a lot easier then cleaning a regular portafilter. Seen there is no spout and bottom anymore. It is still good to clean your naked portafilter.
Just add Puly caff powder to a small container and let the filterbasket and bottomless portafilter body soak into it. Never submerge the handle of the portafilter in the water.
