Time-lapse of engraving Aluminium sandwich material with my blog's logo as dotmatrix-halftone. I use a radius endmill and a 180x180mm (7"x7") workpiece on which the job takes 11 minutes.

Admittedly, image quality is to be improved. Will keep trying! Background story here: https://blog.schallbert.de/halftone-image-on-dibond/