Hopefully a straightforward question: what's the difference between the standard finish and HD finish with Nano Detail materials? I can't seem to find anything in the materials section of the site.
Specifically, I'm printing a small, highly detailed part to use as a master for resin casting. It's about 13mm tall, with a wall thickness of about .3mm. Because of all the fine surface detail, I'm looking for something that will do smooth, clean prints, since any sort of post-processing would eliminate all that detail. Basically, <em>NOT </em>happy with Shapeways' FUD and I'm looking for something closer to production-ready. Is standard Nano Detail going to be good enough, or do I need to go HD... for nearly triple the price.
On a related note, other than impact resistance, burnout or heat deflection, is there any appreciable difference between the various nano detail materials in terms of print resolution? I guess, given the thinness and delicate nature of the part, I should probably go with ND Impact, but if another material would give a better finish, I'm all ears.