I had mentioned previously that I was dissatisfied with the 1st post in the 3D for the Rest of Us series because I felt that the post did not leave the reader with anything they could immediately go out and try.  I was much happier with the 2nd post, even more so now that I have seen The Donut Primitive, V2.  Apologies for the delay of the 3rd post.  I was in and out of the office sporadically over August.