How much SiO2 to desiccate a spool?

A project log for Filament storage science

Beware. Plastic containers are moisture permeable.

DeepSOICDeepSOIC 10/04/2016 at 20:310 Comments

Now that I have determined the specs of silica gel, time to apply.

Let's dry a saturated 1kg spool of ABS. ABS water absorption is 0.2-0.4%, as I found from internet.

-> 1kg spool can hold up to 4 g of water. So, I need no less than 27 g of cat litter to dry out one spool. Or 19 g of proper silica gel desiccant.