What's the Best Design for a Solar Ice Maker?

No.

Would a 10ft igloo pool be taken down block by block os slab by slab if the 1ft layers were removed a day apart? (In below freezing conditions) Or which would be removed in layer slabs on a ten metre igloo pool; a) 10cm blocks b) 10mm blocks c) 1mm blocks or does subzero require a) 1 month b) 2 weeks c) 1 week or Yes/No?

Apart from being incorrigible, the question is also abstruse.

What exactly are you asking? If you pressurized water and then cooled it, all you have is cool water under pressure. You seem to mistake this process with the production of cryogenic gases. The only practical way to make ice is to cool water to freezing point.

Give a glass house at the north pole a one way exhaust vent and a one way valve floor sink then after a good solar day (how long is that?) then supposedly the lack of pressure will syphon water up into the room, which then will lay about all night till it's top layer will freeze over. I'm just not sure what quantity of pressure will be lost, what draw that has, and whether a floor full of water will freeze a full slab.

I think the freezer is looking like the place to find this answer!

Can you post a sketch showing what exactly you have in mind? We know what you're trying to achieve, but we're all having some difficulty trying to visualize what you're trying to describe.

Figure 1

Figure 2

Figure 2 is just a standard contraption with solar panel pump (might need hot water system or heater coil in pipe) it should just basically crack the ice box closing springs open when the ice expands. It would need a fill switch or pressure setting on the pump.

Figure 1 is trying a glass house with solar air expansion, much more tricky but possibly good for a bigger installation. I don't know if the input energy in a cold environment is going to be anywhere near halfway to vacuum or whether fins would cause the water on the slab to freeze any faster.

Either device installed might be too slow to create an ice block maker! Most ice cutters just take by cutting down into ice beds, I've never seen anyone stack water.