Metal marking refers to the process of marking or engraving text, designs, or other identifying information onto a metal surface. This can be done using various techniques such as engraving, stamping, dot peening, or laser marking. Metal marking is often used for identification or branding purposes, as well as for adding information such as part numbers, serial numbers, or logos. There are various metal marking tools and machines available for this purpose, including handheld engravers, dot peen markers, and laser marking systems.