Why do people choose to use a manual coffee grinder? Well, the most common use is for those who enjoy outdoor activities such as hiking and camping. In fact, a manual coffee grinder is a must for the coffee lover while camping. To use one is quite simple actually. You simply load the whole beans into the bowl, then you turn the crank on the device. As you turn, the beans will pass through the grinder and you will have a nice batch of fresh beans. All the comforts of home while roughing it in the outdoors. For your house, a krups burr coffee grinder is highly recommended.