Funnel for 51mm Generic Bottomless Portafilter (2 tabs)
thingiverse
To better tune my espresso shots I bought a generic bottomless portafilter on Amazon. I use a DeLonghi ECP3420 espresso maker. I found several funnels for the brand name portafilters but they didn't fit the generic one I bought. This one fits the generic portafilter perfectly and keeps the finely ground coffee from getting all over while I distribute and tamp. Print with the wide side down on the build plate and enable ironing to give a smooth finish on the flats. This keeps fine coffee grounds from getting stuck in the pattern left by the nozzle. It's probably fine to print this in PLA - but technically PLA isn't food safe so I printed in PETG. This is the portafilter I bought - and based on my research it appears to be roughly the same one you can get all over amazon, eBay, and Aliexpress. https://www.amazon.com/gp/product/B08NP7N8BN/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1 This is a remix of the excellent "Delonghi ECO 311 Portafilter Funnel" by yotam99. I use that funnel for the portafilter that came with my machine.
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