This is a modified version of Foba's original HD Kadeshi Mothership, available here.
The stand mount was removed and the model has been sized up to be in-scale with zacbond's Kushan Mothership. Because of the increased size, the ship was divided into three sections, with keyed joiners to make sure the sections are rotated correctly.
You may need to play with the scaling on the joiners depending on the precision of your printer.
The author hasn't provided the model origin yet.