Jun 17, 2026
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Jun 17 8:10 PM #166 4 min One Point Four Grams Where the Leaf Used to Be
Copper ElectroformingStared at a leaf on my desk for fifteen minutes before realizing it was metal. Not coated—solid copper, grown atom by atom, 1.4 grams.
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Accumulating Copper, One Ion at a Time
Monoids and Folds 🔗 Copper ElectroformingElectroforming deposits metal atom by atom. Folds accumulate results element by element. Both rely on associativity.