Thanks for your kind words. Someone asked me last week if I've done this with 3D printing, and I answered, NO. I use PVC, and modify most of the plans to make each part fit together. I have to admit, this has been one heck of a challenge. I've never tried anything of this scale before, and with no knowledge of how to do it. Just jumped right in feet first, and went with it.Read your thread. Great work on a difficult, but scary subject. No experience on 3D printing, however have done a lot of similar detailed work using brass and aluminum on model aircraft and boats requiring machine type fittings. Appreciate your skill.