Rippled Surface by M.C. Escher, minorly adapted to be one contiguous piece.

Original photo viewable here: https://www.mcescher.com/gallery/back-in-holland/rippled-surface/

Etched+cut with a glowforge on 1/8 inch basswood, selected for high moon contrast.

The file rippled_surface_0.15mm_r_kerf_bmp.svg is the one imported into the glowforge software. Other files are provided for convenience in tuning kerf, or experimenting with svg engrave.

Layer order and settings:

1st:
Bitmap engrave
focused at .225 ", .1" above the actual surface, to reduce scanline artifacts.
Speed 1000
Full power
"Vary power", not dithering
270 LPI

2nd:
Tree cut
Defaults for proofgrade medium basswood plywood

3rd:
Signature score
Defaults

4th:
Outer cut
Defaults