Coffee Portafilter Funnel

thingiverse

I started grinding my coffee, but it used to be a real hassle when I spilled a lot of coffee powder out of my grinder onto my portafilter. It was always such a mess that it really annoyed me. So, I came up with this design as I wasn't sure if other designs would work well with my machine and save filament. It works flawlessly with my Oster Primalatte II portafilter, which is approximately 52 mm in diameter on the top part.