Is the Pressure Chamber worth it?

What comes out, and how fast?

Sand is valued at 3 times dust on the resource table that matches this building. Two belt connections fit an input and an output. The footprint is 8.22 by 5.26 meters and 6.16 meters tall. The wiki calls a fed chamber 1,500 kg an hour. That is 5 kg times 300 cycles, and I am showing the multiplication rather than a second stopwatch. Cheapest power on the solar page for this 10 kW load is $225: one $75 post at 3 kW and one $150 twin at 7.5 kW. The twin holds 4 kWh, the post holds none, so night is the twin's problem.

Speeding the chamber up is a common question. The page I have does not print a button, a percent, or a price for a speed upgrade. I will not supply one. If your sand buffer is the bottleneck, the Stone Press cycle is the consumer: one chamber is said to feed about 2.5 presses, which means two presses leave sand idle and three presses starve.

When I would skip it

If you only need cash tonight, selling raw dust through a Packager avoids 10 kW and $500. The chamber pays when stone's 7 times multiplier is the plan, because the press cannot run on dust alone. Buying the chamber without panels is how a line dies at sunset. I would rather own the $225 power pair first and accept a slower night than own a silent $500 box.