Dissection: Wet Sanding and Discovery

Sometimes during my process I want to stop because I see something completely unexpected that just looks really cool.  Then I have to remind myself that the only reason it looks so interesting is that it has 180 grit epoxy-resin sandpaper residue on it which is a super toxic powder, then I take a picture and go on with my process... 

See full process below from band saw through 3000 grit sandpaper.