I am trying to figure out what these extra machining ops are on my drawer sides.  They are on all of them.  Location is kind of random as you can see in the screenshot.  The first image shows the red figure 8looking machine marks.  They are on face 6 of the left and right drawer sides.  Wooden drawer boxes, no box construction method, bottoms are dado's, Accuride slides.  It is wanting a 1/4" routing tool here.  The second image is of 2 drawer sides from the same drawer bank.  Both are right sides.  You can see that the location is not consistant.  I cannot find any machinging ops that are causing it.  Any ideas?