well I found another use for my cnc router. I bought a pen attachment and now I can draw with it.
so I can draw on the material to make sure everything is right draw out full size plans and parts templates, mark parts for assembly and draw pictures and such.
this goes along with the diamond drag tip I got so I can engrave things too.
here is a link to watch a couple of videos of it in action. it uses sharpie pens and had a sliding weighted tube so it can handle less then flat surfaces. so now I have a 4'x8' plotter for dirt cheap.
http://tinyurl.com/4sonwy