I created this moon for one of the niches in the piece. It is engraved in 1/8" mdf and is around 3.5" in diameter. The settings were at 500mm/sec and around 20% power for any K40 people out there. I struggled a little bit to cut it completely through. I think that is a focusing issue and am a few mm out of focus, but it still works pretty well. I was able to "pop" it out of the mdf, but one part of the edge was fuzzy.