To make a mirror, the sheet glass needs to be in your inventory, not in the bench. The temperature of the bench must be higher than 5000, or the silver powder will blow away and be lost. There doesn't seem to be any upper limit to the heat, as it works even with 5000+ temperature.
There is no visible timer on the bench while the mirror is being made, just a message in Main saying the Mirror will take 30 seconds to complete. The mirror is placed directly into your inventory when completed, you don't have to wait for the bench to cool down before taking it as with other glass items.
- 6 used in a Mutagenics Lab.
- 3 used to upgrade an Acoustics Laboratory with a reflectory.
- 4 used in a Funerary Temple.
- Various amounts used in a Mirrored Pyramid.
- 1 used in a Trophy Case for Test of the Archaeologist.
- 7 used in a Prismatic Opticon.
Research and Tuition
- 10 needed for Crystal Acoustics research.
- 16 needed for Obelisk Construction 2 research.
- 50 needed for Mutagenics research.
- 532 needed for Mirrored Pyramid Construction research.
Acoustics Laboratory, Crystal Acoustics, Funerary Temple, Funerary Temple, Mirrored Pyramid, Technology/Obelisk Construction/6, Test of the Funerary Temple, Test of the Hand of Ra, Test of the Prismatic Opticon, Test of the Windsong