–Played with regulators. Lost a lot of air on one thinking it had defects, when in fact it just lacked an o-ring. Crap. But there are eight working Teknas now. The criticality of every design aspect of those regs is astounding: I spent a long time trying to get one to work that lacked a groove in the needle for a circlip to hold the rubber-footed thing in place. Switched to a grooved needle and boom! it worked.
–Made pizza for dinner. Over-cooked it, but pretty tasty.