I started off realizing that putting together the heat-preserving component with the correct partial triplex bond could be done with a single hexarm, leaving an excess fire atom which can conveniently be passed to the other chamber for the argentic glass. The rest of the solve is then built around it.

As a fun exercise for this event, I shall make predictions on the winning score for every metric which I attempt.
Prediction: the winning solution will have a sum of about 385. It will probably have only 1 triplex bonder and 3 arms.