If you’re looking to etch metal (other than stainless steel) you need settings and examples. Marking stainless steel is easy and almost anything (including condiments) will work. Try and mark Aluminum, Copper, Brass, Chrome, Nickel, Glass, Ceramic, Titanium, etc. and you’ll likely find a CO2 laser (even the pro model) just doesn’t “cut it”.
Laserbond 100 (like ceramark and thermark before it) lets you make deep black markings like on overpriced coffee mugs. The inventor even publishes a comprehensive list of settings for best results of each material including all types of metal, ceramic, and even glass. So look no further, here you go, everything you wanted to know: https://goo.gl/h6DWw6
Laserbond 100 was developed by the inventor of ceramark, is less expensive, and performed better on all the materials tested by ToolMetrix: https://goo.gl/mVehL9 Now I can mark directly on all of my tools and metal projects. I might even mark on some glass and backlight it. I think a combination of etched glass and dark laserbond marking backlit by a some glowing LEDs would make a great sign!