Versión en español aún en construcción.

Desiccating vents all work the same way. They filter the air through silicon gel to soak up all the water vapor. You can buy them for a pretty penny or you can make one for yourself out of pvc pipe and silicon gel. Silicon gel is available at most hobby stores as a crystal used to dry flowers. Make sure you get the kind that has "indicating crystals". These indicating crystals change color from blue to pink as it gets saturated with water.

The crystals may be expensive to purchase, but they can be used indefinitely as long as you don't soak them in biodiesel. When they turn pink they can be reclaimed by heating. Different silica gels have different temperatures to regenerate. Typical blue-pink gels regenerate after several hours at 200F.

One note of importance is that you don't want to force heated air through the silica gel because they don't absorb water very well when heated. Ambient temperature is best.

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