In some cases bottomless portafilters are interchangeable between brands, such as the Nuova Simonelli bottomless portafilter, this one is interchangeable with the one used on most Victoria Arduino espresso machines. This has to that it is the same brand.
You can add any filterbasket to the bottomless portafilter. But in most cases a deep double filterbasket is installed. This has to do that there is no bottom in the way.
In almost most cases bottomless portafilters are made from brass which has been chrome plated. A few brands make bottomless portafilters from stainless steel. But that is a minority
Bottomless portafilters start as regular casted portafilters. But during the machining process the bottoms are cut out of the casting, which creates a bottomless portafilter. After this the portafilters are sanded and polished into a mirror finish and chrome plated.
No, the portafilters used on Breville, Sage and Solis espresso machines are unique to those brands. And are also a lot smaller then the standard 58mm portafilters, which are used for instance on E61 brewing groups.
The bottomless or naked portafilter is one of the latest innovations in the world of coffee machine accessories, even though it has been around for a couple of years. A bottomless portafilter is just nothing else then a regular portafilter body where the bottom has been cut out of. Below you will find a wide selection of portafilters.
The bottomless portafilter shown on this page is one which can be used on various Gaggia espresso machines. The Gaggia part reference for this item is 1165185. This bottomless portafilter is only suitable for the commercial Gaggia espresso machines, not the domestic ones. This bottomless portafilter comes as a set. So the portafilter, including shiny...
The bottomless portafilter shown on this page is one which can be used on la Spaziale espresso machines. This means that this portafilter is suitable for all La Spaziale espresso machines This bottomless portafilter comes as a set. So the portafilter, including shiny handle, and installed in the portafilter a filter basket spring and a 2 coffee...
The bottomless portafilter on this product page can be used on a variety of Astoria espresso machines. The Astoria part reference number for this item is 27311004. The portafilter has a ear orientation of 45 degree, the ear thickness is 6mm. The portafilter does come with a double filter basket and stainless steel spring. This portafilter is made...
On this page you will find one of the most used bottomless portafilters. The one which can be used on the E61 brewing group and a variety of the E61 style brewing groups, not all. This bottomless portafilter can’t be used on the Faema E61 Legend and Faema E61 Jubile espresso machines. This bottomless portafilter comes with a stainless steel...
On this product page you will find a bottomless portafilter which is suitable to use on various Conti espresso machines. This bottomless portafilter comes as a set. So the portafilter, including shiny handle, and installed in the portafilter a filter basket spring and a 2 coffee filterbasket. The portafilter has been made from casted and machined brass...
On this page you will find a bottomless portafilter which can be used on some Astoria and Wega espresso machines. Most of the brewing groups don’t use this type of portafilter. This portafilter is only suitable for the Astoria and Wega brewing groups which have a 53mm group. The ears for the portafilter are oriented at a 90 degree angle and have a...
The portafilter on this product page is a bottomless portafilter, which is suitable for various Nuova Simonelli espresso machines. This bottomless portafilter does not have a Nuova Simonelli part reference number. The body of the bottomless portafilter is made from casted brass, which has been machined and nickel and chrome plated. The ear...
The portafilter on this product page is one which is suitable for various Bezzera espresso machines. Note: not for E61 style brewing groups. If this portafilter is suitable for your Bezzera espresso machine, don’t hesitate to contact us. This bottomless portafilter body is made from casted and machined brass, which has been polished, nickel and...
The bottomless portafilter shown on this page is one which can be used on various Cimbali espresso machines. This bottomless portafilter comes as a set. So the portafilter, including shiny handle, and installed in the portafilter a filter basket spring and a 2 coffee filterbasket. The portafilter has been made from casted and machined brass which has...
On this product page you will find a bottomless portafilter which is suitable to use on various commercial La Pavoni brewing groups. The Pavoni part reference for this item is 5030988. This bottomless portafilter comes as a set. So the portafilter, including shiny handle, and installed in the portafilter a filter basket spring and a 2 coffee...
On this product page you will find a bottomless portafilter for various Bezzera espresso machines. This bottomless portafilter has 2 ears, they are oriented at 45 degree. The thickness of these ears are 5,8mm. This bottomless portafilter comes with a holding spring and double filter basket. The portafilter has been manufactured in Italy. On which...
On this page you will find a bottomless portafilter for Carimali espresso machines. Carimali, next to La San Marco uses 3 ears instead of the commonly found 2 ears. This portafilter can solely be used on Carimali brewing groups. The portafilter has 3 ear lugs instead of the traditional 2. And have a thickness of 6mm. The portafilter itself has been...
On this product page you will find a bottomless portafilter suitable for the La San Marco brewing groups. La San Marco is the only commercial brand which uses the 3 ear configuration instead of the standard 2 ear configuration. This portafilter has been manufactured in Italy. The thickness of the ears on the bottomless portafilter are 7mm instead of the...
On this product page you will find a bottomless portafilter which is suitable to use on various Wega espresso machines. This bottomless portafilter comes as a set. So the portafilter, including shiny handle, and installed in the portafilter a filter basket spring and a 2 coffee filterbasket. The portafilter has been made from casted and machined brass...
The bottomless portafilter on this page is suitable for brewing groups manufactured by Victoria Arduino and Nuova Simonelli. Seen those brands are the company. The bottomless portafilter on this page have a ear orientation of 45 degree and have a ear thickness of 7mm. The body is also inclined. The portafilter comes with a double filterbasket and with a...
On this page you will find a bottomless portafilter suitable for Rocket espresso machines. The bottomless portafilter has 2 ears, oriented at 90 degree. The thickness of these ears are 5,7mm as with the original portafilters. This portafilter has been manufactured in Italy. The portafilter comes including a holding spring and a 18 gram double...
On this page you will find a bottomless portafilter suitable for the domestic espresso machines made by Gaggia. So this item is NOT suitable for commercial espresso machines manufactured by Gaggia. This portafilter has a ear orientation of 45 degree. The ears have a thickness of 7mm and the basket comes including the spring and 3 cup filterbasket. This...
The portafilter on this product page is a bottomless portafilter which can be used on a variety of Vibiemme brewing groups. This is the case for the commercial and the domestic espresso machine models. This portafilter has no spout, but a bottom which has been cut out. The ear orientation is 90 degree and the thickness of the ears is 5,5mm. The...
A bottomless portafilter can be used as a single or double portafilter, but it does give a different result. With a naked portafilter you can only make one espresso at the time, seen there is no portafilter spout to divert the coffee into two directions.
The most common defence of the naked portafilter is that it helps us evaluate the uniformity of our extraction, leading to better flavourful and consistent espressos. The idea is that spurting and channelling are invisible with a standard portafilter because of the spouts, but are obvious with a bare one. In principle, this will allow the barista to gauge the efficacy of the pour's extraction. They may use that information to fine-tune their distribution,grind, and tamping techniques in order to achieve more uniformity.
The well know common naked portafilter size is the 58mm bottomless portafilter. This size bottomless portafilter can be used with brands such as Faema, Cimbali, Rancilio, Marzocco. Other common sizes are for instance the 54 bottomless portafilters for Breville/Sage and Solis. But less common sizes are for instance for La San Marco and La Spaziale portafilters, with their 53mm diameter portafilters.
Which tamper you need with your naked portafilter mainly depends on which brand of espresso machine you have and what the internal diameter is of the portafilter. The most common espresso tamper used for filterbaskets is the tamper with a diameter of 58mm.
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