{"title":"Base Knock-Convex","description":"\n\u003ch2\u003eWhy the name Knock?\u003c\/h2\u003e\n\u003cp\u003eAfter the first ramping of the espresso, a light knock is applied to the side of the portafilter, which causes all the espresso powder to fall from the side into the portafilter. Then it is tamped again. To avoid having to use the tamper base for this light knock on the portafilter, which could damage the soft portafilter, or even the wooden handle, the tamper can now be knocked with the silicone ring incorporated in the base. We have legally protected this invention.\u003c\/p\u003e\n\u003ch2\u003e\u003ca name=\"convex\"\u003e\u003c\/a\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cbr\u003eWhy Convex?\u003c\/h2\u003e\n\u003cp\u003eNormally, the surface of the espresso tamped in the portafilter does not matter much; whether Flat (flat) or Convex (convex), there is enough space between the espresso surface and the shower screen so that the water can spread evenly over the espresso and the espresso powder also penetrates evenly. However, if flat sieves are used or significantly more than 7g (1-cup sieve) or 14g (2-cup sieve) are used, there may be too little space between the espresso powder and the shower sieve for optimal brewing water distribution. For this purpose, a Convex tamper base can be used, which leaves a trough in the center for better water distribution.\u003c\/p\u003e","products":[{"product_id":"55-mm-tamper-unterteil-knock-convex-joefrex","title":"Tamper Base KNOCK-CONVEX 55 mm - JoeFrex","description":"\u003ch2\u003eJoeFrex - 55 mm Tamper Base KNOCK-CONVEX\u003c\/h2\u003e\n\u003cp\u003eAll the lower parts of KNOCK CONVEX have a slightly convex pressing surface to compress the coffee powder.\u003c\/p\u003e\n\u003cp\u003eWhy the name Knock?\u003c\/p\u003e\n\u003cp\u003eAfter pressing the coffee powder for the first time, lightly tap on the side of the filter holder to dislodge any remaining powder on the sides. Then it can be pressed again. To avoid using the base of the tamper or the wooden handle for this light tap on the filter holder, risking damage to both the tamper and the filter holder arm, you can now tap with the integrated silicone ring in the base.\u003c\/p\u003e\n\u003cp\u003eWhy the name CONVEX?\u003c\/p\u003e\n\u003cp\u003eNormally, the surface of the coffee powder pressed into the filter holder doesn't play a significant role; whether it's flat or concave, there's enough space between the coffee surface and the dispensing group so that the water dispensed from it can be evenly distributed over the coffee powder and pass through it uniformly. However, if a flat filter is used in the arm, or if much more than 7g (for a single cup filter) or 14g (for a double cup filter) is used, the space between the coffee powder and the dispensing group may be too reduced for optimal water distribution. For this purpose, you can use the Tamper Base Convex, as it leaves a cavity in the middle of the pressed powder, for better water distribution.\u003c\/p\u003e\n\u003cp\u003eThe size of the tamper to be used varies according to the manufacturer. Here you will find a list of manufacturers and their required sizes for tampers:\u003c\/p\u003e\n\u003cp\u003e- Delonghi BAR Tamper 51mm\u003cbr\u003e- Dalla Corte 54mm\u003cbr\u003e- ECM Tamper 58mm\u003cbr\u003e- Elektra Micro Casa S1 Tamper 49mm\u003cbr\u003e- Elektra Tamper 58mm\u003cbr\u003e- Faema Tamper 58mm\u003cbr\u003e- Fiorenzato Tamper 58mm\u003cbr\u003e- Francis! Francis! X1 Tamper 56mm\u003cbr\u003e- Gaggia Tamper 58mm\u003cbr\u003e- Grimac Tamper 58mm\u003cbr\u003e- IIsomac Tamper 58mm\u003cbr\u003e- IZZO Lever Tamper 53 mm\u003cbr\u003e- IZZO Tamper 58mm\u003cbr\u003e- Krups Tamper 48\/49mm\u003cbr\u003e- La Cimbali Tamper 58mm\u003cbr\u003e- La Marzocco Tamper 58mm\u003cbr\u003e- La Pavoni Club Combo \/ Duetto Tamper 58mm\u003cbr\u003e- La Pavoni Europiccola Tamper 48\/49mm\u003cbr\u003e- La Pavoni Manual Lever for Domestic Use (starting from 1999) Tamper 51mm\u003cbr\u003e- La Pavoni Manual Lever for Domestic Use (until 1999) Tamper 48\/49mm\u003cbr\u003e- La Pavoni Lusso Tamper 53mm\u003cbr\u003e- La Pavoni Millennium Tamper 51mm\u003cbr\u003e- La Pavoni Professional Tamper 51mm\u003cbr\u003e- La Pavoni Pub Tamper 58mm\u003cbr\u003e- La Scala Tamper 58mm\u003cbr\u003e- La Spaziale Tamper 53mm\u003cbr\u003e- Nuova Simonelli Tamper 58mm\u003cbr\u003e- Quickmill 58mm\u003cbr\u003e- Rancilio Tamper 58mm\u003cbr\u003e- Reneka Tamper 57mm\u003cbr\u003e- Saeco Tamper 53mm or 51mm\u003cbr\u003e- San Marco Tamper 54.4mm or 53mm\u003cbr\u003e- Vibiemme Tamper 58mm\u003cbr\u003e- Wega Tamper 58mm\u003c\/p\u003e","brand":"JoeFrex","offers":[{"title":"Default Title","offer_id":53580639404362,"sku":"9052-55-bkc","price":22.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/1575\/0474\/files\/Joe-Frex-Base-Knock-Convex.jpg?v=1765552906"},{"product_id":"57-mm-tamper-unterteil-knock-convex-joefrex","title":"Tamper Base KNOCK-CONVEX 57 mm - JoeFrex","description":"\u003ch2\u003eJoeFrex - 57 mm Tamper Base KNOCK-CONVEX\u003c\/h2\u003e\n\u003cp\u003eAll KNOCK CONVEX bottom parts have a slightly convex pressing surface to compress the coffee grounds.\u003c\/p\u003e\n\u003cp\u003eWhy the name Knock?\u003c\/p\u003e\n\u003cp\u003eAfter pressing the coffee grounds for the first time, lightly tapping on the side of the filter holder to dislodge any remaining grounds. Subsequently, it can be pressed again. To avoid using the base of the tamper or the wooden handle for this light tap on the filter holder, risking damage to both the tamper and the filter holder arm, you can now tap with the integrated silicone ring in the base.\u003c\/p\u003e\n\u003cp\u003eWhy the name CONVEX?\u003c\/p\u003e\n\u003cp\u003eNormally, the surface of the coffee grounds pressed into the filter holder doesn't play a significant role; whether it's flat or concave, there's enough space between the coffee surface and the dispensing group so that the water can be evenly distributed over the coffee grounds and pass through them evenly. However, if a flat filter is used in the arm, or if much more than 7g (for a one-cup filter) or 14g (for a two-cup filter) is used, the space between the coffee grounds and the dispensing group may be too small for optimal water distribution. For this purpose, the Convex Tamper Base can be used, as it leaves a cavity in the middle of the pressed coffee, for better water distribution.\u003c\/p\u003e\n\u003cp\u003eThe dimensions of the tamper to be used vary depending on the manufacturer. Below is a list of manufacturers and their required dimensions for tampers:\u003c\/p\u003e\n\u003cp\u003e- Delonghi BAR Tamper: 51mm\u003cbr\u003e- Dalla Corte Tamper: 54mm\u003cbr\u003e- ECM Tamper: 58mm\u003cbr\u003e- Elektra Micro Casa S1 Tamper: 49mm\u003cbr\u003e- Elektra Tamper: 58mm\u003cbr\u003e- Faema Tamper: 58mm\u003cbr\u003e- Fiorenzato Tamper: 58mm\u003cbr\u003e- Francis! Francis! X1 Tamper: 56mm\u003cbr\u003e- Gaggia Tamper: 58mm\u003cbr\u003e- Grimac Tamper: 58mm\u003cbr\u003e- Isomac Tamper: 58mm\u003cbr\u003e- IZZO Lever Tamper: 53mm\u003cbr\u003e- IZZO Tamper: 58mm\u003cbr\u003e- Krups Tamper: 48\/49mm\u003cbr\u003e- La Cimbali Tamper: 58mm\u003cbr\u003e- La Marzocco Tamper: 58mm\u003cbr\u003e- La Pavoni Club Combo \/ Duetto Tamper: 58mm\u003cbr\u003e- La Pavoni Europiccola Tamper: 48\/49mm\u003cbr\u003e- La Pavoni Manual Lever for Domestic Use (from 1999 onwards) Tamper: 51mm\u003cbr\u003e- La Pavoni Manual Lever for Domestic Use (up to 1999) Tamper: 48\/49mm\u003cbr\u003e- La Pavoni Lusso Tamper: 53mm\u003cbr\u003e- La Pavoni Millennium Tamper: 51mm\u003cbr\u003e- La Pavoni Professional Tamper: 51mm\u003cbr\u003e- La Pavoni Pub Tamper: 58mm\u003cbr\u003e- La Scala Tamper: 58mm\u003cbr\u003e- La Spaziale Tamper: 53mm\u003cbr\u003e- Nuova Simonelli Tamper: 58mm\u003cbr\u003e- Quickmill: 58mm\u003cbr\u003e- Rancilio Tamper: 58mm\u003cbr\u003e- Reneka Tamper: 57mm\u003cbr\u003e- Saeco Tamper: 53mm or 51mm\u003cbr\u003e- San Marco Tamper: 54.4mm or 53mm\u003cbr\u003e- Vibiemme Tamper: 58mm\u003cbr\u003e- Wega Tamper: 58mm\u003c\/p\u003e","brand":"JoeFrex","offers":[{"title":"Default Title","offer_id":53580644548938,"sku":"9052-57-bkc","price":22.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/1575\/0474\/files\/Joe-Frex-Base-Knock-Convex_d5d303c1-10de-43ce-94d5-971bf944d5c2.jpg?v=1765552970"},{"product_id":"53-mm-tamper-unterteil-knock-convex","title":"Tamper Base KNOCK-CONVEX 53 mm - JoeFrex","description":"\u003ch2\u003eJoeFrex - 53 mm Tamper Base KNOCK-CONVEX\u003c\/h2\u003e\n\u003cp\u003eAll KNOCK CONVEX bottom parts have a slightly convex pressing surface to compress the coffee grounds.\u003c\/p\u003e\n\u003cp\u003eWhy the name Knock?\u003c\/p\u003e\n\u003cp\u003eAfter pressing the coffee grounds for the first time, lightly tap on the side of the filter holder to dislodge any remaining grounds. Subsequently, it can be pressed again. To avoid using the base of the tamper or the wooden handle for this light tap on the filter holder, risking damage to both the tamper and the filter holder arm, you can now tap with the integrated silicone ring in the base. This idea is patented by JoeFrex.\u003c\/p\u003e\n\u003cp\u003eWhy the name CONVEX?\u003c\/p\u003e\n\u003cp\u003eNormally, the surface of the coffee grounds pressed into the filter holder doesn't play a significant role; whether it's flat or concave, there's enough space between the coffee surface and the dispensing group so that the water can be evenly distributed over the coffee grounds and pass through them evenly. However, if a flat filter is used in the arm, or if much more than 7g (for a one-cup filter) or 14g (for a two-cup filter) is used, the space between the coffee grounds and the dispensing group may be too small for optimal water distribution. For this purpose, the Convex Tamper Base can be used, as it leaves a cavity in the middle of the pressed coffee, for better water distribution.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0940\/1575\/0474\/files\/Tamper-check_480x480.jpg\" alt=\"Tamper-check\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/p\u003e","brand":"JoeFrex","offers":[{"title":"Default Title","offer_id":53580650185034,"sku":"9052-53-bkc","price":22.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/1575\/0474\/files\/Joe-Frex-Base-Knock-Convex_33cb1307-883f-426a-962b-b8dfea676ff7.jpg?v=1765553007"},{"product_id":"58-mm-tamper-unterteil-knock-convex-joefrex","title":"Tamper Base KNOCK-CONVEX 58 mm - JoeFrex","description":"\u003ch2\u003eJoeFrex - 58 mm Tamper Base KNOCK-CONVEX\u003c\/h2\u003e\n\u003cp\u003eAll KNOCK CONVEX bottom parts have a slightly convex pressing surface to press the coffee grounds.\u003c\/p\u003e\n\u003cp\u003eWhy the name Knock?\u003c\/p\u003e\n\u003cp\u003eAfter pressing the coffee grounds for the first time, lightly tap (from English Knock) on the side of the filter holder to dislodge any remaining grounds. This allows for subsequent pressing. To avoid using the base of the tamper or the wooden handle for this light tap on the filter holder, risking damage to both the tamper and the filter holder arm, you can now tap with the silicone ring integrated into the base.\u003c\/p\u003e\n\u003cp\u003eWhy the name CONVEX?\u003c\/p\u003e\n\u003cp\u003eNormally, the surface of the coffee grounds pressed into the filter holder doesn't play a significant role; whether it's flat or concave, there's enough space between the coffee surface and the dispensing group so that the water can be evenly distributed over the coffee grounds and pass through them evenly. However, if a flat filter is used in the arm, or if much more than 7g (for a one-cup filter) or 14g (for a two-cup filter) is used, the space between the coffee grounds and the dispensing group may be too small for optimal water distribution. For this purpose, you can use the Convex Tamper Base, as it leaves a cavity in the middle of the pressed coffee for better water distribution.\u003c\/p\u003e\n\u003cp\u003eThe dimensions of the tamper to be used vary depending on the manufacturer. Here is a list of manufacturers and their required dimensions for tampers.\u003c\/p\u003e\n\u003cp\u003eDelonghi BAR Tamper 51mm\u003cbr\u003eDalla Corte Tamper 54mm\u003cbr\u003eECM Tamper 58mm\u003cbr\u003eElektra Micro Casa S1 Tamper 49mm\u003cbr\u003eElektra Tamper 58mm\u003cbr\u003eFaema Tamper 58mm\u003cbr\u003eFiorenzato Tamper 58mm\u003cbr\u003eFrancis! Francis! X1 Tamper 56mm\u003cbr\u003eGaggia Tamper 58mm\u003cbr\u003eGrimac Tamper 58mm\u003cbr\u003eIsomac Tamper 58mm\u003cbr\u003eIZZO Lever Tamper 53mm\u003cbr\u003eIZZO Tamper 58mm\u003cbr\u003eKrups Tamper 48\/49mm\u003cbr\u003eLa Cimbali Tamper 58mm\u003cbr\u003eLa Marzocco Tamper 58mm\u003cbr\u003eLa Pavoni Club Combo \/ Duetto Tamper 58mm\u003cbr\u003eLa Pavoni Europiccola Tamper 48\/49mm\u003cbr\u003eLa Pavoni Manual Lever for Domestic Use (from 1999 onwards) Tamper 51mm\u003cbr\u003eLa Pavoni Manual Lever for Domestic Use (up to 1999) Tamper 48\/49mm\u003cbr\u003eLa Pavoni Lusso Tamper 53mm\u003cbr\u003eLa Pavoni Millennium Tamper 51mm\u003cbr\u003eLa Pavoni Professional Tamper 51mm\u003cbr\u003eLa Pavoni Pub Tamper 58mm\u003cbr\u003eLa Scala Tamper 58mm\u003cbr\u003eLa Spaziale Tamper 53mm\u003cbr\u003eNuova Simonelli Tamper 58mm\u003cbr\u003eQuickmill Tamper 58mm\u003cbr\u003eRancilio Tamper 58mm\u003cbr\u003eReneka Tamper 57mm\u003cbr\u003eSaeco Tamper 53mm or 51mm\u003cbr\u003eSan Marco Tamper 54.4mm or 53mm\u003cbr\u003eVibiemme Tamper 58mm\u003cbr\u003eWega Tamper 58mm\u003c\/p\u003e","brand":"JoeFrex","offers":[{"title":"Default Title","offer_id":53580651462986,"sku":"9052-58-bkc","price":22.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/1575\/0474\/files\/Joe-Frex-Base-Knock-Convex_de61d307-b54f-462b-a017-9bd79ed7b57a.jpg?v=1765553023"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/1575\/0474\/collections\/tamper-base-knock-convex-joe-frex_9d2285ce-eb28-4e84-a2c8-b299955076b9.jpg?v=1765812588","url":"https:\/\/www.espresso-international.com\/collections\/base-tamper-knock-convex.oembed","provider":"Espresso International","version":"1.0","type":"link"}