Pushing yarn through a woven backing fabric so it loops or stands up on the other side, then locking it in place with latex on the back so it does not pull free. Almost every modern wall-to-wall carpet — domestic, contract, automotive — is made this way. The technique replaced traditional weaving in the 1950s because tufting machines work an order of magnitude faster, and the carpet that comes off them is dense enough that the speed barely shows.
An array of barbed needles (gauge from 1/10 inch wide for plush carpet to 1/4 inch wide for level loop) pushes pre-tensioned yarn through a primary backing (typically polypropylene woven cloth) on a tufting machine running 800–2000 stitches per minute. A looper hook on the underside catches the yarn loop; cut-pile carpet has a knife after the looper that severs the loop so the pile stands up as a tuft, level-loop carpet leaves the loops uncut. After tufting, the back is coated with a SBR latex (~1.5 kg/m²) and a secondary backing is laminated on. Pile height typically 5–15 mm, density 30–60 oz/yd² (1000–2000 g/m²). Wool, nylon (6, 6,6), polyester, polypropylene, and increasingly recycled-PET fiber are all tuftable on the same equipment with appropriate needle and yarn tension. Loop carpet wears longer; cut pile reads softer; cut-and-loop sculpting gives pattern in a single color.
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House vocabulary — terms ForMatter uses with intent.
Materials and processes for people who design and make things.
A local-first library of materials, processes, and applications, equal weight, citable everywhere. 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, 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. Voice blocks: Barthes, Yanagi, Benjamin channeled within their philosophy; Lefteri verbatim. All cited.
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