The vegan, soft, bamboo-derived alternative to cotton and silk that's a staple of the 'sustainable fashion' tier. Bamboo viscose is regenerated cellulose fiber spun from bamboo wood-pulp via the viscose (rayon) process — the same fiber-forming chemistry as conventional rayon, with bamboo as the feedstock instead of beech or eucalyptus. The fabric reads soft and silky, drapes well, takes deep dye color, biodegrades, and feels naturally cool against skin. The 'sustainability story' is more nuanced than marketing suggests — bamboo plants grow extremely fast (3-5 feet per day under ideal conditions, harvest in 3-5 years vs. 20+ for hardwood), but the conventional viscose process uses carbon disulfide and other harsh chemicals that historically caused worker-health problems and water-pollution issues at the mill stage. The closed-loop bamboo lyocell variant (made via the same lyocell process as TENCEL with bamboo pulp instead of eucalyptus) addresses this — and is the responsible specification for genuinely sustainable bamboo fabric. Buy from sustainable-fashion fabric suppliers; verify lyocell-process certification for the cleanest supply chain.
Regenerated cellulose fiber, source bamboo pulp (typically Phyllostachys edulis / moso bamboo from managed Chinese cultivation) processed via viscose process: pulp + sodium hydroxide + carbon disulfide → bamboo cellulose xanthate solution → wet-spin into sulfuric acid bath → washed cellulose fiber. The closed-loop bamboo lyocell variant uses NMMO solvent (same as TENCEL) instead of CS2/H2SO4, recovering 99+ percent of solvent and producing fiber with very low environmental impact. Density 1500 kg/m³. Tensile strength 25-35 cN/tex dry; 14-25 cN/tex wet (viscose process bamboo loses substantial wet strength, the laundering caveat; lyocell-process bamboo retains 90 percent wet strength). Elongation at break 18-25 percent dry. Moisture regain 13-16 percent (high — the property that gives bamboo fabric its breathability and cooling sensation). Naturally antimicrobial in raw fiber state — the bamboo plant produces 'bamboo kun,' an antimicrobial agent that is mostly washed out during the regeneration process; finished bamboo viscose has only modest residual antimicrobial properties (the marketing claim is often overstated for finished fabric). Dyes well with reactive dyes; blends with cotton, organic cotton, hemp. Sews readily; the soft hand requires moderate-tension feeding to prevent fabric shifting under the foot.
Principled BSDF defaults derived from the sphere fibrous finish. Reasonable seed for Blender, Substance, Keyshot, Rhino — tune per material. Or grab the whole library at once: ForMaterials library →
# finish: fibrous albedo #d8e8d8 metallic 0.00 roughness 0.70 ior 1.45 transmission 0.00 clearcoat 0.00 sheen 0.70 anisotropic 0.50
{
"albedo": "#d8e8d8",
"metallic": 0.0,
"roughness": 0.7,
"ior": 1.45,
"transmission": 0.0,
"clearcoat": 0.0,
"sheen": 0.7,
"anisotropic": 0.5
}
# Blender 4.x — Principled BSDF
# Bamboo Viscose (Regenerated Cellulose from Bamboo Pulp) · finish: fibrous
import bpy
mat = bpy.data.materials.new(name="mat_bamboo_viscose")
mat.use_nodes = True
bsdf = mat.node_tree.nodes["Principled BSDF"]
bsdf.inputs["Base Color"].default_value = (0.6867, 0.807, 0.6867, 1.0)
bsdf.inputs["Metallic"].default_value = 0.000
bsdf.inputs["Roughness"].default_value = 0.700
bsdf.inputs["IOR"].default_value = 1.450
bsdf.inputs["Transmission Weight"].default_value = 0.000
bsdf.inputs["Coat Weight"].default_value = 0.000
bsdf.inputs["Sheen Weight"].default_value = 0.700
bsdf.inputs["Anisotropic"].default_value = 0.500
# KeyShot 11+ — lux Python API, Generic material
# Bamboo Viscose (Regenerated Cellulose from Bamboo Pulp) · finish: fibrous
# Run from Window → Scripting Console
import lux
mat = lux.createMaterial(name="mat_bamboo_viscose", materialType="Generic")
mat.setProperty("diffuse", (216, 232, 216)) # 8-bit sRGB
mat.setProperty("metallic", 0.000)
mat.setProperty("roughness", 0.700)
mat.setProperty("indexOfRefraction", 1.450)
mat.setProperty("transparency", 0.000)
mat.setProperty("coatingWeight", 0.000)
{
"_format": "Substance Designer / Painter \u2014 pbrMetalRough constants",
"_about": "Bamboo Viscose (Regenerated Cellulose from Bamboo Pulp) \u00b7 finish: fibrous",
"baseColor": {
"r": 0.6867,
"g": 0.807,
"b": 0.6867
},
"metallic": 0.0,
"roughness": 0.7,
"ior": 1.45,
"opacity": 1.0,
"anisotropyLevel": 0.5,
"_notes": "Channels listed are the standard Substance pbrMetalRough output. Drop into a Uniform Color node per channel, or as the constant input on a layered stack."
}{
"asset": {
"version": "2.0",
"generator": "ForMatter"
},
"materials": [
{
"name": "mat_bamboo_viscose",
"pbrMetallicRoughness": {
"baseColorFactor": [
0.6867,
0.807,
0.6867,
1.0
],
"metallicFactor": 0.0,
"roughnessFactor": 0.7
},
"extensions": {
"KHR_materials_ior": {
"ior": 1.45
},
"KHR_materials_sheen": {
"sheenColorFactor": [
1.0,
1.0,
1.0
],
"sheenRoughnessFactor": 0.7
}
}
}
]
}# USD Preview Surface — UsdShade.MaterialLook prim attributes
# Bamboo Viscose (Regenerated Cellulose from Bamboo Pulp) · finish: fibrous
def Material "mat_bamboo_viscose" {
token outputs:surface.connect = </mat_bamboo_viscose/PreviewSurface.outputs:surface>
def Shader "PreviewSurface" {
uniform token info:id = "UsdPreviewSurface"
color3f inputs:diffuseColor = (0.6867, 0.807, 0.6867)
float inputs:metallic = 0.000
float inputs:roughness = 0.700
float inputs:ior = 1.450
float inputs:opacity = 1.000
float inputs:clearcoat = 0.000
token outputs:surface
}
}
Textile Exchange Material Snapshot Viscose / Lyocell.
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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