A 3d printing project in working on, the lines are .01 thousands wide, and .01 thousands deep. I'll probably go back and make them deeper and wider so they print better. It's modeled in solid edge, and took me around 30 hours to draw up don't know yet how long it'll take to print. I'm also hoping to take this and break it up into puzzle pieces, I'll probably take those pieces and make molds from them so I can make copies easier.