Vacuum VS Dehydrator! What's the best way to dry filament?

drei 3d printing filament can be essential for mechanically strong but also visually appealing parts I recently bought myself a vacuum chamber that can easily boil water after a minute of evacuation I thought this might be a a great way to drive filament without the need for heating and potentially damaging the polymer to see if it really worked I investigated different drying methods a little closer I comp I compared vacuum drying against the normal food dehydrator and also circulation oven at even higher temperatures to see how much moisture they can remove and how long you really need to dry on materials I also tested how filament behaves in a box full of desiccant couldn't talk everybody I'm Stephan and welcome to C&C kitchen this video is sponsored in part by audible and I have a really cool audio book recommendation for you the end so I recently bought that I want to use for degassing resin and vacuum casting I thought this might also be a great new method to drive a filaments without harming them by high temperatures well turns out it unfortunately isn't that simple and I'll show you why in a bit usually we distinguish between surface and core moisture you can get surface moisture if you for example get a roll of filament out of your air-conditioned house into your garage on a humid day moisture condenses on the material and causes problem even with non hygroscopic materials this moisture if it's not soaked up by the material will quickly evaporate a normal ambient air