Metallography Part II – Microscopic Techniques Published by Sectioning of a sample; wet grinding in several stages; polishing in several stages; etching; and observation with a metallographic microscope. Published:January 5, 2015 Related videos Colorful, Magnetic Janus Balls Could Help Foil Counterfeiters Liquidmetal function and finish – Stronger than titanium 3D Printing Devices with Embedded Sensing