printed the OTA

The printing in 3D of my model went very well! The optical tube assembly of the David Dunlap Observatory looks great! Ward did some maintenance work on his Ender, overcoming issues. The OTA on the right is the result. My redesign from 20 Aug, using subtraction, prints well. I've very happy.

That's the hard part (I think). Now we'll try printing all the other bits. The next key milestone is getting the articulation to work so that the OTA can be moved into different positions.