Back in early May, I swapped in a new bag of silica gel, which (as always) immediately punched the humidity down to the Hobo datalogger’s 15%RH minimum reading:
A closer look at the very beginning of that data shows the humidity dropping for an hour after the door closes:
The logger is on the bottom of the safe, with the desiccant bag on the shelf above it, and there’s no mechanical air circulation: it’s all done by air currents, driven by whatever drives them. I have no idea what that bump in the middle means.
The Smell of Molten Projects in the Morning 
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2 responses to “Monthly Science: Basement Safe Drying”
Maybe outgassing of whatever is in the safe?
Good idea!
The squishy stuff consists of an inch of paper inside a manila folder, which would certainly release water vapor as the humidity drops.
This could turn into more science, if I’m not really careful…