Cotton fibers swelled in concentrated sodium hydroxide while held under tension — they swell into a smooth, round, lustrous cross-section that takes dye more uniformly and reflects light like silk. The lustered cotton in fine shirt fabrics, embroidery thread, mass-market socks. John Mercer patented in 1844; Horace Lowe added the tension step in 1890.
Cotton in 18–32% aqueous NaOH at room temperature, held under length tension to prevent shrinkage. Cellulose II crystal-structure transition: fiber swells, surface convolutions disappear, cross-section converts from kidney-shaped to round. Length tension prevents shrink-back; tension-mercerized cotton is ~25% more tensile-strong than untreated, ~10% denser, dye-uptake doubles, luster reads silk-like. Standard pre-treatment for premium cotton (Egyptian, Sea Island, Pima) destined for shirt-weight fabric, embroidery thread, hosiery. The process explains why mercerized cotton thread is more expensive and noticeably shinier than ordinary cotton.
character — silk-like luster, smooth hand, deep dye uptake.
SSPC / NACE surface-coating standards; manufacturer technical literature for the specific coating chemistry.
House vocabulary — terms ForMatter uses with intent.
Materials and processes for people who design and make things.
A local-first library of materials, processes, applications, and finishes — equal weight, citable everywhere, with cost-over-volume curves, trade-off profiles, equipment-tier filters, and second-life paths layered onto the data so a student can move from "what is this" toward "what's actually buildable here, now, by me." Part of the renato.design ecosystem — sibling of Plenum, Specimen, Ingenue, gesture, graf, and the Renato Rhino plug-ins. Form and matter, inseparable.
Half of teaching materials is teaching how the material is made into the thing. The standard subscription library was always light on that half. The wedge here isn't better samples or a prettier interface — it's treating Process as a peer entity, not a footnote.
Conway's Material World on raw materials, Lefteri's Making It on processes, Forty's Concrete and Culture, Sparke's Design in Context, Bürdek's Design: History, Theory and Practice of Product Design, Schröpfer's Material Design on materials in architecture, Winchester's The Perfectionists on tolerance, Minshall's Your Life Is Manufactured on the global supply chain, von Busch's Making Trouble on material activism, Were's How Materials Matter, Hegger / Drexler / Zeumer's Basics Materials, Untracht and McCreight on metalsmithing, USDA Forest Products Lab on woods, GIA on gemstones, Schott / CoorsTek / Toray / Owens Corning datasheets, MakeItFrom for verifiable property numbers, ASM Handbook, ISO standards. Museum holdings draw from the Met, MAD, V&A, Smithsonian American Art Museum, Newark Museum of Art, British Museum, Heard Museum, Smithsonian NMAI, Eiteljorg Museum, Philadelphia Museum of Art, Cranbrook Art Museum, and Grand Rapids Art Museum — collection-record permalinks only, designer overview pages and exhibition listings excluded. Voice blocks now ride on every entry kind — material, process, application, and finish — and include Ruskin on iron, Anni Albers on twining, Greg Lynn on the shred-and-teeth NURBS lineage, Pugin on the metal that won't be hammered, Barthes / Yanagi / Benjamin channeled within their philosophy; Sparke, Bürdek, Forty, Conway, Schröpfer, Minshall, von Busch, Lefteri, Pat Pruitt, Mary Lee Hu, Tom Joyce, Albert Paley, and the rest of the contemporary makers quoted verbatim with citation. All cited.
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