SPN, Techniques 02: Hermetic bungholes in polypanel digesters My gift to you, world. Take it and make marvelous, insulated, any-size, liquid-containing thingies, including, like, digesters. Click here for the PDF. Hey, it’s yours!TwitterLinkedInFacebook Read more about SPN, Techniques 02: Hermetic bungholes in polypanel digestersLog in to post comments
