I designed a Tamper for a Portafilter with a 51mm diameter. You can print the parts separately and screw them easily together. Recommendations: I definitely would recommend using food safe material for the bottom part. A good company that provides this filament is FormFutura: HDGlass
Tamper best free 3D printing files・59 models to download・Cults
51mm portafilter 3D Models to Print - yeggi
51mm portafilter 3D Models to Print - yeggi
Free 3D file Espresso Tamper 51mm 🏠・3D printing model to download・Cults
Tamper best 3D printing files・119 models to download・Cults
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STL file Barista Coffee Tamper Station Tamper Station Coffee Station ☕・3D printable model to download・Cults
Tamper best 3D printing files・119 models to download・Cults
STL file Depth adjustable tamper ☕・3D printing idea to download・Cults
Tamper best free 3D printing files・59 models to download・Cults
coffee tamper 51mm 3D Models to Print - yeggi - page 10
coffee tamper 51mm 3D Models to Print - yeggi
mechanical coffee tamper 3D Models to Print - yeggi - page 40