Ken, I was not suggesting it was easy. Indeed I think the intial stages would require people with expertiese in Fiberglassing. And we would use that experties to learn from. People could be taught the proper process to make there own final pieces. This is what they have done in the UK as per my links.
And of course there are probably much easier ways to build an observatory.
Indeed Ian Sharp sent me a link to another fellow in there group who has gone a diffrent path. And he said this might be the better way to do it, taking less time to do than his one.
http://www.astralweeks.org/observatorybuild/index.html
Similar to a few others I have seen like this one
https://home.comcast.net/~bronson321...n321/home.html