Rendezvous #7 at Canopy Art and Iron had a planetary theme. All the planets were represented, and my task was Neptune.

The first thing to come to mind about Neptune was that it was an ice giant. So I needed to make it very cold.

The first step was to see how cold I could get a Talenti jar full of antifreeze. Once that was getting nice and frosty it was time if I could get the aluminum sphere I bought off ebay cold enough to make ice.

Over a couple hours it would cool enough to condense some water out of the air.

Eventually, by going bigger on power supplies, radiator, and quadrupling the original number of peltier chips, I could get the 4 gallons of antifreeze cold enough to make ice.

Every time it froze, the surface looked different.

Below is the encoldening apparatus made up of 3 beefy power supplies, 16 peltier chips sandwiched by aluminum cooling blocks, 3 water pumps (two hot one cold) and a radiator. I think it was from a small Chevrolet.