Looks good Jeff and thanks for sharing.  For those who are willing to spend more money in exchange for less clean up I would suggest checking out the Frosted Detail plastic material offered by Shapeways.  It has a significantly better surface finish than either the Strong and Flexible plastic or the Hi-Def Acrylate in my experience.  Although it does still have some faceting on cylindrical parts such as this.  On all of the materials I have found the best way to smooth the surface is with several heavy applications of primer with sanding between coats.  My .02 cents worth anyway!