Submitted by Brian_white on Wed, 02/26/2014 - 3:39pm Tool Concept Stage: Prototype License: This work is licensed under a Creative Commons Attribution 4.0 International License. Description: The Dripwall delta collects solar heat in a drip of water and transfers that heat under the soil to keep roots warmer. It is a season extender that lets you start seedlings a lot earlier and also the heat stored under the soil protects seedlings from night frost.Add new comment Documentation Documentation Wiki: Bill of materials Other tools needed to build this tool Step-by-step build instructions Supporting materials ie. SketchUp files, CAD drawings, photos, video, technical drawings. Add new comment I like this tool up0 users have voted. I built (or modified) this tool up0 users have voted.