Engraving directly on metal is only possible with a high powered laser. However, metal can be 'marked' by the use of some special chemicals. This product is sprayed onto the metal and once lasered it will bond to the metal at the molecular level. This is a permanent etching, if you scrape it off you're taking metal with it.
Marking is a good way to make serial number tags, or to personalize your products such as knives, thermos, keychains, etc. and it is the same way my engraved lighters are produced.
Marking produces a high contrast image or text against the metal.
Here are some of the metals that can be done:
If you have a product that you need marked, sent us a message and we'll see what we can do for you.