Here are some links to various finishing techniques for ABS 3D printed models, as would be typical using our Stratasys Fortus machine. Some really neat finishes here, be careful with using acetone though, for anyone considering this make sure you consider the health and safety issues here, and in particular make sure you do it in a well ventilated area!
Joseph Flaherty’s ABS smoothing link: http://www.wired.com/design/2013/03/3d-print-smoothing/
Acetone Vapor Smoothing on 3D printed ABS parts from my Printrbot: http://www.youtube.com/watch?v=z7083xw9I7o
Experiments using Acetone Vapor to smooth 3d printed objects: www.trenchphysics.com/?p=41
Images included here are sourced from Joseph Flaherty’s link above.