The first synthetic plastic — Leo Baekeland's 1909 invention, the original Bakelite. A dark amber-to-black thermoset that cures hard under heat and pressure and never melts again. The plastic of every early-20th-century electrical fitting, every brown radio cabinet, every Bakelite jewelry piece, every billiard ball after ivory; the modern uses are quieter — phenolic plywood (the dark facing on marine plywood and concrete formwork), Micarta and Tufnol industrial laminates, brake linings, kitchen-pot handles, the binder in OSB and many engineered woods. Brittle, dimensionally rock-stable, electrically insulating, fire-resistant. Comes as a two-part compound (resin powder + hardener for compression molding) or as a paper / fabric / wood laminate that's been impregnated with the resin and pressed.
Step-growth condensation thermoset between phenol and formaldehyde. Two main routes: NOVOLAC (acid-catalyzed, formaldehyde-deficient — produces a stable B-stage powder that needs a curing agent like hexamethylenetetramine; the standard for compression-molding compounds) and RESOLE (base-catalyzed, formaldehyde-rich — produces a self-curing resin used as a laminating impregnant for plywood, paper, and fabric). Cure proceeds via methylene-bridge cross-linking; once cured, the polymer is fully thermoset and cannot be remelted. Glass transition 150–200 °C depending on cross-link density. Compressive strength 100–250 MPa, tensile strength 40–80 MPa (notch-brittle), flexural modulus 5–10 GPa. Density 1300–1400 kg/m³ unfilled, higher with mineral or fiber fill. Excellent dielectric properties (dielectric strength 14–18 MV/m), low water absorption, dimensional stability across humidity range. Self-extinguishing (LOI ~28 percent); chars rather than melts in fire. Fillers: wood flour, mica, glass fiber, paper, cotton fabric — each producing a distinct grade with named commercial trade-names (paper-laminate Bakelite is dielectric-grade; cotton-laminate is mechanical-grade; mica-filled is electrical-arc-resistant). Cuts, drills, and mills well with carbide tooling; releases formaldehyde dust during machining (work wet, ventilate). Solvent-resistant to most organics; attacked by strong oxidizers and concentrated alkali.
Radio cabinets soon became an obvious medium for plastics, both because they were an easy shape to get out of a mould and because they were new products without an established visual identity.
Principled BSDF defaults derived from the sphere glossy finish. Reasonable seed for Blender, Substance, Keyshot, Rhino — tune per material. Or grab the whole library at once: ForMaterials library →
# finish: glossy albedo #5a3018 metallic 0.00 roughness 0.25 ior 1.45 transmission 0.00 clearcoat 0.40 sheen 0.00 anisotropic 0.00
{
"albedo": "#5a3018",
"metallic": 0.0,
"roughness": 0.25,
"ior": 1.45,
"transmission": 0.0,
"clearcoat": 0.4,
"sheen": 0.0,
"anisotropic": 0.0
}
# Blender 4.x — Principled BSDF
# Phenolic Resin (Phenol-Formaldehyde, Bakelite) · finish: glossy
import bpy
mat = bpy.data.materials.new(name="mat_phenolic_resin")
mat.use_nodes = True
bsdf = mat.node_tree.nodes["Principled BSDF"]
bsdf.inputs["Base Color"].default_value = (0.1022, 0.0296, 0.0091, 1.0)
bsdf.inputs["Metallic"].default_value = 0.000
bsdf.inputs["Roughness"].default_value = 0.250
bsdf.inputs["IOR"].default_value = 1.450
bsdf.inputs["Transmission Weight"].default_value = 0.000
bsdf.inputs["Coat Weight"].default_value = 0.400
bsdf.inputs["Sheen Weight"].default_value = 0.000
bsdf.inputs["Anisotropic"].default_value = 0.000
# KeyShot 11+ — lux Python API, Generic material
# Phenolic Resin (Phenol-Formaldehyde, Bakelite) · finish: glossy
# Run from Window → Scripting Console
import lux
mat = lux.createMaterial(name="mat_phenolic_resin", materialType="Generic")
mat.setProperty("diffuse", (90, 48, 24)) # 8-bit sRGB
mat.setProperty("metallic", 0.000)
mat.setProperty("roughness", 0.250)
mat.setProperty("indexOfRefraction", 1.450)
mat.setProperty("transparency", 0.000)
mat.setProperty("coatingWeight", 0.400)
{
"_format": "Substance Designer / Painter \u2014 pbrMetalRough constants",
"_about": "Phenolic Resin (Phenol-Formaldehyde, Bakelite) \u00b7 finish: glossy",
"baseColor": {
"r": 0.1022,
"g": 0.0296,
"b": 0.0091
},
"metallic": 0.0,
"roughness": 0.25,
"ior": 1.45,
"opacity": 1.0,
"anisotropyLevel": 0.0,
"_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_phenolic_resin",
"pbrMetallicRoughness": {
"baseColorFactor": [
0.1022,
0.0296,
0.0091,
1.0
],
"metallicFactor": 0.0,
"roughnessFactor": 0.25
},
"extensions": {
"KHR_materials_ior": {
"ior": 1.45
},
"KHR_materials_clearcoat": {
"clearcoatFactor": 0.4
}
}
}
]
}# USD Preview Surface — UsdShade.MaterialLook prim attributes
# Phenolic Resin (Phenol-Formaldehyde, Bakelite) · finish: glossy
def Material "mat_phenolic_resin" {
token outputs:surface.connect = </mat_phenolic_resin/PreviewSurface.outputs:surface>
def Shader "PreviewSurface" {
uniform token info:id = "UsdPreviewSurface"
color3f inputs:diffuseColor = (0.1022, 0.0296, 0.0091)
float inputs:metallic = 0.000
float inputs:roughness = 0.250
float inputs:ior = 1.450
float inputs:opacity = 1.000
float inputs:clearcoat = 0.400
token outputs:surface
}
}
Brydson *Plastics Materials* (phenolic chapter); Plenco / Sumitomo phenolic-resin technical literature.
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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