I don't expect being simple or they would had solved it in the last eight years, but exploring the idea further will not do much harm probably.
Stainless steel is waterproof and robust against shock and vibration so these points are solved yet.
The tolerance question is more problematic, steel can elevate their temperature to thousands of degrees without melting, but a mirror like that would suffer probably.
I ignore how darkening and clouding would affect in this case. Maybe the surface could be cleaned somehow?. Can we expect much embrittlement in metal?.
I suppose that would need to sacrifice at least one (or several) simpler robots just to put all the mirrors sync in place before to die. We would need need also a source of light, but spontaneous incandescence of a softer matherial should be easy to achieve.
Stainless steel is waterproof and robust against shock and vibration so these points are solved yet.
The tolerance question is more problematic, steel can elevate their temperature to thousands of degrees without melting, but a mirror like that would suffer probably.
I ignore how darkening and clouding would affect in this case. Maybe the surface could be cleaned somehow?. Can we expect much embrittlement in metal?.
I suppose that would need to sacrifice at least one (or several) simpler robots just to put all the mirrors sync in place before to die. We would need need also a source of light, but spontaneous incandescence of a softer matherial should be easy to achieve.