coarse grinding works pictures. eight tips for effective grinding thefabricator. jun 03, 2013 besides, high-quality grinding discs as well as flap discs work with right-angle grinders as a system. an old jalopy (that is, a low-quality grinder) with fancy tires (high-quality grinding disc) may drive a little better, but its still not the,what is a coffee grinder with pictures,but it works perfectly well, its small and simple. you just plug it in, put in the coffee beans, place the cover and press on it which gets it going. the only thing i dont like about it is that it doesnt allow me to select how coarse i want the coffee.