The underside support goes through the location of belly dome. The dome kit part was not glued, as I kept it to hide the hole when I will use the lateral support.
As the dome is an important visual element below the Stardestroyer, that bothered me to not have it. So I made a mold of the kit part, to have a copy which I hollowed out the center.

To fix these domes, I use two different methods :

  • the complete original dome is held with a water cistern blocking unit from a (new) toilet kit. It is glued to the dome.

  • For the hollowed dome, I first imagine a system of brackets but finally went with magnets : magnets in the dome, and screws in the stardestroyer belly.