Finally, I have a new idea for the new observatory roof.
This time, I use a lock to connect with telescope and roof base, so you can turn 360 degrees when you rotate the roof, and the roof can also take off as same as the design before.
1.Roof structure is more solid when you pick up the roof.
2.Can rotate 360 degrees and let it more interesting
If you have bought Greenwich Observatory before, and interesting this new type of roof, please mail me for a new download link.
Maybe I need one or two month to update all the PDF partlist.
Keep working day and night.