David answers T.H.’s questions, near the end of the workshop in Aurora, May 2017

From the last day at the Aurora Build-It-Biogas workshop, May 2017. Thomas Henry Culhane (founder of Solar C³ITIES) interviews David about his designs.

David discusses his design for a heat sealer (used to make gas bags and low-cost tropical digesters from plastic sheets), and his design for [The_Cube]. The heat sealer discussed in the first part of the video uses parts from Doug Care. Navigating that site can be a challenge — look for replacement parts.