Recently, a growing number of the engineering applications require the material of Nano-scale alloy. The main reason is that the physical property would be different when the normal alloy material is mill grinded into Nano-scale powder which is useful for current science. The most important skill is that how to grind the general alloy material into Nano-scale. For the current normal physical grinder the main problem is that grinding generates heat which has negative effect for grinder and powders. Additional methodology and cost are required to reduce or bring out the heat. For this reason, a new grinder with the planetary design is developed. The grinder has a cup with a hammer and the granule could be put in it. When the grinder is working, there is the rotation and revolution motion in the cup. The hammer is rolling in the cup and generating centrifugal force and then crumbling these granules.