The dome is an all steel structure, made from flat lengths of 3mm thick flat & angle steel bent to shape and welded in situ. Similarly, the wall panels had to be attached to the framework, marked to shape using the framework, removed and cut with an angle grinder, then finally screwed in place.
The three separate sliding panels are made from aluminium sheet bonded to 3mm thick high density foam board for insulation, prior to installing. The curved tracks are made from 4 carbon fibre 'doctor' blades, 100mm wide, 2.5mm thick and 6.5 metres in length. 5mm spacing with narrower doctor blades makes three separate channels.
Each side panel was temporarily pre-assembled on flat ground then lifted into place and let slide into their natural curve. Then carefully drilled through and attached to the steel angle slit frames. Many drills were used for this, carbon fibre takes the edge off high speed drills in no time flat!
A full height rear access door serves to allow entry and as a viewing aperture for objects low down.
