Insulation complete and tuned. It sound so nice, very quiet.

It slams hard to -90c, rough estimate of 30 seconds from ambiant.

The third stage is tuned so nicely that the compressor freezes back at 10 psi. It pulls down into a vacuum and the compressor never got warm.

Batteries charging on digital camera, pictures inc.

Thanks Chilly1 for another fine cascade and awesome birthday present.