Textured surface finish using a galvo with 3D sliced

I have accidentally made a nice, surfaced finish a while ago but I can’t for the life of me remember how I did it. There was no cleanup needed whatsoever.
I remember running 256 passes in 3D sliced mode, it’s probably enough to run way fewer passes since it’s only black and white in the depth map and nothing in between. Half way through the engrave I messed with the focus but I can’t replicate it, also I am looking if it’s possible without messing with the focus length.

I attached a picture of the end result.
Thank you so much for any help!