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.
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