thanks for the advice, the caster did tumble them, but they don't remove what left of the spruce (is that the right term?)

The Surface is a bit pitted, but still look pretty good to the naked eye, 14MP DSLR with the image cropped to 100% shows up so all the detail ;)

In case anyone is interested , I used Best-cast , NJ, USA, for the casting, and they use Rhino has their CAD software so where happy to work straight from a MoI file :)