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BTW, if you do cook up your own dryer based on a plastic storage tub with tight sealing lid, use a hot soldering iron to cut the holes for the fans. Sawing or drilling the cheap plastic tub material will crack and shatter it. Rough edges can be easily removed with a Dremel fitted with a sanding drum, also without cracking as trimming edges with a razor knife might produce.
If the lid doesn't seal or is deliberately loose to provide ventilation in normal storage use, hotglue some strips of foam along the underside of the lid edge. Most tubs have carrying handles which double as lid latches. The airtight seal will force air to be drawn only via the fans and not through lid edge leaks.
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