VACUUM CHAMBER for DRYING ELECTRONICS
After all, water boils at lower temps at higher elevations, and in space, water will even boil at 33F ( 1 C)
Freeze-drying coffee is another example of using high vacuum to desicate stuff.
I hooked up a vacuum pump which had been marketed for bleeding hydraulic brakes and clutches to a pressure chamber for extending the life of tennis balls. It did not seem to work when I tried rapid drying a damp paper towel. Indeed, my control, another paper towel left out at room temps dried before the one in the vacuum chamber.
I think I've heard of repurposing a refrigeration pump to act as a vac-pump. Someday, I may try that, but would prefer not to have to deal with the freon. Besides that, if someone is scrapping a fridge, and I can pick it up free, will the pump be any good?