If you’ve ever watched a printer in action, raster engraving is not unlike this.
The laser moves forward and backward over the work, from top to bottom, marking the parts the drawing tells it to. We like raster engraving to be shown by black infill of the shapes to be raster engraved. Raster engraving is very controllable, we can do just what you want, but it can also be rather slow (and therefore expensive). So sometimes a vector engraving can be more appropriate.
A vector is a line, vector engraving is like laser cutting but we finely set the lasers not to cut all the way through, but to score the surface where we tell it to. We like vector engraving lines to be shown as blue strokes.
We cannot directly control the line thickness, other than adjusting focus and using multiple lines, so vector is not as controllable as raster, but it is quick, and can very effective.
Is a type of raster engraving, but can only be done on a specialist engraving laser (we have 3), using a suitable greyscale image.
See more about 3D Engraving here.
Is not unlike 3D engraving, see above, but it uses a photo instead of a greyscale image.
We can mark metal in various ways, through anodising or corrosion, but generally we use a marking compound.