6mm substrate layers with Formica HPL on either side, bound together with a couple of rods running through and held apart with 6mm spacers. For each colour, pieces are laid out on a pre-laminated sheet and cut with laser or CNC. Pieces are assembled together using both a jig and rods running through pre-drilled holes.
Multiple cables to suspend the fixture in order to balance the centre of gravity. Low voltage LED light.