54mm Magnetic Dosing Funnel for Espresso Portafilters

thingiverse

I always found that printed dosing funnels had a hard time staying in place, especially when trying to settle the grounds by tapping or stirring with a toothpick. Six 5 x 3 mm magnets do the trick, and the upside is the funnel stores nicely on the side of the espresso machine and won't leave any marks! Print upside down with the magnet pockets facing up. You'll need to press the magnets into place, and you may need to modify the design to get the right fit here. For instance, I had to adjust this when I switched between 0.2mm and 0.1mm layers. It's set up for 0.1mm in the current file, but if you have problems leave me some comments and I'll spin a few more versions at various bore clearances. As an added bonus, if you want a separate caddy to hold the funnel I've included that part too, uses the same 5 x 3 mm magnets. Holds two toothpicks as well. I sourced the magnets from Apex Magnets, they were fast and high quality: https://www.apexmagnets.com/magnets/5mm-x-3mm-disc-neodymium-magnet I use this with my Breville Bambino Plus, but it should work with any 54mm portafilter.