1) the grinder is in my Mini Mill after about one and a half movies coffee (over three months) is defective. The mechanical base is (despite disassembly) incomprehensible, but something blocked during the grinding process, the crank rotates through and pulls the adjusting screw in this movement ever closer to (instead of ground coffee). The grinder can be disassembled only with great force. Unfortunately blocked after a few coffee beans then unfortunately again. A Google search reveals that this does not often happen, but every now and then.
2) the coffee collection container is made of plastic. If you pour into it (to him flush) a little too hot water, he gets vertical fissures that probably break more over time.
3) the collection container is unfortunately designed that regardless of whether you normally or upside down represents water droplets can not it after washing run off, and you have to wipe it later.
4) some mechanically stressed parts are made of plastic and show after a few months of wear.
The Mini Mill is a good coffee grinder only keeps them if you're unlucky not long. I have now a product of Rhino Wares (almost identical to Porlex), unfortunately, there are some wear parts made of plastic, but it makes a more stable impression than the Hario. However, it also costs twice as much.
