The mill is, properly processed as with almost all Japanese products. Here, the higher price compared to often inferior Chinese or German products is really worth. The grinding lasts depending on the amount and degree of beating about 1-2 minutes. I use the mill mostly for grinding coarse coffee for Carlsbad Kanne (porcelain filter). Unfortunately, the result of grinding is very inhomogeneous from a few millimeters to Zentelmillimeter. This leads naturally to the fact that I always find a lot of coffee grains in my coffee. Compared with my electric coffee machine Solis the Mahlresultat is rather poor because very inhomogeneous. For occasional use eg when camping or at home, the mill is sufficient. For a professional, uniform grinding result you should use an electric coffee grinder in my opinion more. Despite all also freshly ground coffee from this mill tastes much better than already ground coffee, because the coffee bean flavor is best preserved.