Chemical machining will involve dipping a workpiece right into a tank containing a chemical solution (etchant). The etchant used for this method is often a mixture of potent chemical acids that react to metal—dipping the metal into your etchant leads to the uniform dissolution of metal with the workpiece. , https://raymondhszgn.blogspothub.com/26319892/the-5-second-trick-for-5-axis-cnc