I finish the domes to keep them removable (behind will be hide the electric supply and the support openings).

Here, a flexible tube is used

There, I take an mold of the thread that I casted in resin. A screw is inserted to secure bonding.

Below, I use a hooded bathrobe for optical lens that fits perfectly on my tube (table leg, you remember ?). This dome will be rarely used because the Galactica will be 99.9% of the time stand from there.