I saw this wonderful Moire Pattern appear of several blogs last week and I just knew I had to put this technique into laser cutting. The original artist is Andrea Minini and she has lots of amazing drawings all done in a similar style. For my version I manually traced the original image to create the vector artwork, each line is just a single low power cut and they are around 100 concentric rings. It was 8 hours of drawing but once the first one was cut it was all worth it.
There has been some discussion since about making further patterns like this automagically, if anything comes from that I'll be sure to post the workflow up here.