I made another ashtray, this time with cousin Timmy’s face in it.
I used a free program called MakeHuman.
http://www.makehuman.org/
I love it for modeling human faces. It covers tons of face and body details.
This ashtray is 8" tall and 6" wide, and was cut on the Shapeoko XXL in 30 minutes.
Here’s my human face PDF. book. I give it away in a couple places.
http://community.carbide3d.com/t/my-3d-modeling-aproach/7997?u=jdg3