Electric coffee Hario Mini Mill Slim grinder

After some time the ritual of grinding coffee has become a troublesome thing, especially when couple of friends come over. So i designed and tested very simple extension to classical hario mini mill slim coffee grinder (see https://youtu.be/adNBEkSJ2eQ ). From economical point of view 30 euro grinder + 35 euro extension is still much more affordable than ceramic grinders that can be found to provide the same quality and reproducibility of the coffee grinding itself. Used motor has to be quite po