This week I’m back inside the box—our 40-foot shipping container workshop—finishing the framing and starting insulation so we can keep making progress on Spiffy when it gets cold. The whole point of this container is to give us a place to build bigger molds and fiberglass parts this winter, and to do that I need our 4x4 CNC to be hoistable so it can get out of the way when we’re not using it. That sent me down a bit of a rabbit hole: double top plates, doubled studs, blocking, and reinforcing the 2x4 ceiling joists by sandwiching 3/4" plywood between two 2x4s with construction adhesive and structural screws—because I’m trying to build something that should comfortably handle around 400 lb (and yes, I’m not a structural engineer, so consider this the ramblings of a madman). Once the blocking was in and the windows were masked off, I finally got to try spray foam for the first time. It was messy, kind of addictive, and honestly a lot of fun. Two kits got me to roughly the 16 ft mark plus an end wall—because I ended up applying a thicker layer than planned (about 1.5–2" on the walls) to avoid condensation issues, especially in the tricky corners. A thermal camera check showed the walls were nice and consistent while the ceiling needed a few touch-ups, so I ordered three more kits. Next week it’s unistrut installation for the hoist, more reinforcements, shore power, and then we’ll finish foaming the rest of the container.