The wedge breaker seperate the redundant parts of the casting without damaging the product, such as the riser and runner. It has the advantages of improving work efficiency,the casting is no damaging, and reducing the cost of the casting. Unskilled workers can easily learn to use it in a short time, and can work continuously and easily, improving the work intensity and working environment, replacing traditional separation methods such as hammering and toothless saw cutting. Free workers from heavy manual labor.