Yep, the rocks out in the driveway.
Here are settings that I used for engraving my gravel.
For most of my rocks, I decided that I like 400/full power at 270, and I stopped documenting after that.
Truly, though, slowing it down is pretty nice. 200/full looks really really good on the Zoey rock.
Some rocks behave differently than others, regardless of settings
600/80 marks the rock, but it doesn’t get much depth.
Lexie was a good rock. I like the contrast.
300/full power on Emily, there. Nice.