Bits & bobs, this & that of late:
...In effort to thwart the recent heat and humidity here in the White Mountains (or, perhaps just to follow the philosophy of circuitous overcomplication... 🙂 ) here are some sketches of quick-release exhaust fittings of mine for a large, wheeled AC & dehumidifier unit (these have been installed throughout my home via window panels).
...Sketching out a severely overcomplicated "computer shelf", rapid-fab style:
(plasma cut / 3d printed four-post server rack == RepRapRack?? xD) 🙂