Image Etcher

This is a simple etching tool using OpenSCAD. It uses a .png file to etch an image into a .stl file.
The .png file should have a white background. Can be color or grey scale to give it different depths.

I used it to etch logos into shot glassed created with
https://www.thingiverse.com/thing:4693444

More detailed image file will require a finer nozzle. I lost a lot of detail by using a 0.4mm nozzle.