Solar kiln for drying lumber quicker. You can build them easily in any size. This one dries 15,000 board feet at a time and collects 2 million BTUs per day with zero power consumption. a solar panel powers the fans and compressors.
Tuesday Tool Tip: Keep your eye on the size. | When you're building projects with dimensional lumber (2x4s, etc.), remember that the actual size of a board is always smaller than its "nominal" (stated) size. You can use this chart with common board sizes as a reference for your next project.