Anti-Popcorning Hopper for Rossi RR45 Grinder

thingiverse

This is an anti-popcorning bean hopper to improve the single-dosing performance of the Rossi RR45 espresso grinder. Since the Rossi will still have comparatively high retention, you'll need a spout and probably some sort of bellow system as well. Luckily you can find all that right here on Thingiverse. I haven't printed this yet, so not sure how well this will work but the design is solid and should do its job. It's intended to replace the original hopper entirely, which means you need to bypass the magnetic safety switch by soldering/twisting the two leads together that come out of the machine. It will sit right above that upper burr and should reduce popcorning efficiently.