Imagine you're making a pattern to custom laser cut your own parts. Oh wait, you are! Well then, draw the cutting line in blue on your vector graphics editor. What's that you say? You want it in black acrylic? And want to represent that using a black fill? Ooops!
|You don't need to fill areas if you just want a simple cutout. Blue lines are cutting lines, but black fill will result in...||
Completely etched surface due to the black fill. The perfect gloss of the acrylic is lost.
DO use blue hairlines
|There we go! Blue hairlines show the path the machine will follow as it spits out high powered laser beams to blast through your material of choice.||In this case, blue acrylic. Look at that smooooooth surface.|