I wanted to give a gift to my brother so I made him an engraved knife. I engraved the sheath using the Leather Material settings with the blue diode laser. For the hilt, I used the stainless steel setting but after focusing on the knife...I then "defocused" by 5mm to get the darker black engraving you see in the pic. I ran about 3 passes. For the leather sheath. it was done on one pass.