There’s a guy who makes model railroad figures this way and has posted information on using DS in garden railways forums. He’s such an artist that he makes his own models rather than using genesis or the like. http://www.mylargescale.com/Community/Forums/tabid/56/aff/22/aft/121979/afv/topic/Default.aspx#242886 His figures are too big (and too expensive) for my scale of 1:29.
Just what I need, a Trotwood McAllister action figure!
I make my own figures in 1:29 out of polymer clay, but got rather frustrated with it a couple years ago when I lost a whole box of them in a move, or maybe in a car wreck. (Both happened about the same time.) Haven’t thought of combining 3d rendering with sculpting and model railroading. Yet!
Here are some of mine at the Chicago Botanic garden railroad in 2009. Most of these have been lost or broken since then.