Bob understanding your reasonings for not going oblate, this is a good exercise because it clearly shows the difference of a true sphere.
Yep, and shows how easily it is to have perspective distortions when photographing. For instance, I used your math to arrive at the dish dimensions. From a distance the dish looks too small.... but when you get close to it? It's just right.
Also, if I may ask, how are you laying down your paint? Due to the small scale of the study model and the hi-res pics, it appears to have orange peeled.
It did. I didn't wait long enough for the first primer coat to cure before adding the second color. The paints are Plasticote primers. Problem is... is that the temps were down in the 60's yesterday and we haven't turned on the heat in this old house yet.... so the paints were complaining about that, too.
For the purpose of the project, I'm sure that's ok (and it could be knocked down with 400-600 grit. But curious of your thoughts...
Yep. It's ok and not noticeable to the naked eye from a distance of a foot or more. This little feller is only six inches in diameter and the surface block details will hide any sort of imperfections. I DID go back and knock it down. It was particularly bad over.... the dish and the front section. Ack!! So using a macro on a model this small with directional lighting... WILL reveal its flaws. Kurt will tell you my stuff does NOT look so unflattering in person.
The color coat is airbrushed... about 6 light coats... and that also helped smooth it out.