Has anyone seen the Magicbox Acetone bath machine? It looks pretty much like a 3D printer. Once you are done printing an ABS or PLA filament based object you place it into the MagicBox, turn it on, adjust the settings, and the machine does its work.

http://3dprint.com/2522/magicbox-kic...lish-3d-print/

This seems like quite a nice solution to the roughness you typically get from 3d printed objects. Judging from the images provide at their Kickstarter project located here, it appears to work pretty well. The machine will retail for $699, but backers of their Kickstarter project will get a nice discount of $170. Check out a couple examples of what this thing can do: