Eli5: When a logo, image or anything is etched on a surface via a laser, why is it always there a final pass that runs throughout the image?
In: 21
If you try to draw with a ballpoint pen~~cil~~, when you fill up an area you will first scribble in one direction which fills 95% of it, then scribble in an other direction to fill the remaining 5%.
Laser engraving try to fill up surfaces with a line. The problem is a surface is 2d while a line is 1d-ish. There is some thickness to it but in between the lines there might be some remaining paint to etch. So you finish the job by having a faster finishing pass in a different orientation to clean up anything remaining.
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