Hello everyone.
I made this a few years ago and downloaded both models from Thingiverse, but the alternator (part of Mazda RX7 rotary engine https://www.thingiverse.com/thing:4709639 ) is not there anymore. I thought I've lost the model files when my hard drive in my old computer broke down. Fortunately I stumbled upon a backup drive collecting dust and containing the files, so I can share them here.
Print with at least 3 perimeters and 20% infill, otherwise it can come apart (I learned the hard way). Enable supports for top and bottom covers, other parts don't need any. Also I printed both covers in PET-G, all other parts in PLA. For assembly I used hot glue for the bottom cover and bowl and superglue and small screws for the top cover and blades. For cosmetic parts I used superglue for the “plug” and a small bearing with M3 screw and nut for the pulley, so it can rotate.
I personally prefer the inverted plate, because it produced better results with less effort.
Excuse my English, I'm doing my best.
Happy grinding
The author remixed this model.
Scaled down the original grinder to 55 mm and 50% height, then combined it with the alternator add-on (the item cannot be found in myminifactory, but it still can be found here: https://cults3d.com/en/3d-model/game/mazda-rx7-23-27-alternator-add-on ) I've downloaded it from Thingiverse few years ago.