SelSec

If you live in a humid place you're probably familiar with the effects of humidity on salt, sugar and some spices. Depending of the severity of the humidity and the duration of exposure, it can turn salt into wet mush and sugar into a brick.

SelSec is a bottle cap with an integral storage compartment for desiccant packages; specifically 10g silica gel in the white sachet. (Note that this thing is NOT for loose, unpackaged silica gel crystals!). The cap is designed to screw onto a spice bottle with 41mm outer diameter threads (Goya and Badia and other brands in plastic and glass bottles.)

SelSec is comprised of three pieces: the sleeve that screws onto the bottle, a platform that separates the silica gel sachet from bottle's contents and a snap-on lid to contain the gel pack. I printed the sleeve and platform on a raft.

Silica gel absorbs water and water weighs a lot (1g./cm⌃3). I wasn't sure what the weight of the silica gel packages I had laying around was, so I weig