The black-anodized 1-inch square aluminum extrusion with the T-shaped slot down each face — the structural toy block for adult engineers. The profile every machine shop, prototyping lab, FIRST Robotics team, and trade-show fixture is built from. Cut to length on a chop saw, joined corner-to-corner with hidden fasteners that engage the slot, accessorized with linear bearings and panel clips that ride in the same slot. The brand canon is 80/20 Inc (Columbia City, Indiana — the company that introduced the 1010 series in 1989), but the profile is now made by Bosch Rexroth, Misumi, Item, and a dozen smaller mills. Material is almost always aluminum 6063-T5 (the extrusion alloy), so the same alloy that carries 6063 in the alloy library carries this profile. Buy by the foot from McMaster-Carr or MSC for one-off projects, by the cut-to-length stick from 80/20 or Misumi for production. The Ingenue parts library should cross-reference this profile because half of student maker-projects start with a length of T-slot.
Extruded aluminum profile in the 6063-T5 alloy / temper, cross-section a 1.0×1.0-inch square (the 1010 designation, vs. 1515 for 1.5-inch and 2020 metric in mm) with a T-shaped slot 0.260 inch wide down the center of each of the four faces. Profile weight ~0.65 lb/ft (~0.97 kg/m). Standard finish is clear or black anodize; mill-finish available at lower cost. Tolerances per Aluminum Association DS-1 (extrusion standard) — typical straightness 1/8 inch in 12 feet, twist 1 degree per foot. Joins via T-nuts (square or roll-in) plus button-head cap screws (M6 or 1/4-20 typical) tightened across a corner bracket; specialized end-fasteners (anchor / center / standard) join end-to-end without external brackets. Compatible accessories: linear bearings that ride in the slot, panel clips for plywood / acrylic enclosure walls, hinges, casters, leveling feet — entire ecosystem of hardware standardized to the 1010 / 1515 / 1530 / 1545 dimensions. Cuts cleanly with a fine-tooth carbide chop saw or cold saw; tapping the slot for end-fasteners requires a long-reach M8×1.25 or 5/16-18 tap. Aluminum 6063-T5 yield ~145 MPa, ultimate ~185 MPa — adequate for most framing and fixture loads but not structural in the building-code sense.
Principled BSDF defaults derived from the sphere metallic finish. Reasonable seed for Blender, Substance, Keyshot, Rhino — tune per material. Or grab the whole library at once: ForMaterials library →
# finish: metallic albedo #3a3a3d metallic 1.00 roughness 0.45 ior 1.45 transmission 0.00 clearcoat 0.00 sheen 0.00 anisotropic 0.00
{
"albedo": "#3a3a3d",
"metallic": 1.0,
"roughness": 0.45,
"ior": 1.45,
"transmission": 0.0,
"clearcoat": 0.0,
"sheen": 0.0,
"anisotropic": 0.0
}
# Blender 4.x — Principled BSDF
# Aluminum T-Slot Extrusion, 1010 / 25mm Imperial Series (80/20-style) · finish: metallic
import bpy
mat = bpy.data.materials.new(name="mat_aluminum_extrusion_tslot_1010")
mat.use_nodes = True
bsdf = mat.node_tree.nodes["Principled BSDF"]
bsdf.inputs["Base Color"].default_value = (0.0423, 0.0423, 0.0467, 1.0)
bsdf.inputs["Metallic"].default_value = 1.000
bsdf.inputs["Roughness"].default_value = 0.450
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 = 0.000
bsdf.inputs["Anisotropic"].default_value = 0.000
# KeyShot 11+ — lux Python API, Generic material
# Aluminum T-Slot Extrusion, 1010 / 25mm Imperial Series (80/20-style) · finish: metallic
# Run from Window → Scripting Console
import lux
mat = lux.createMaterial(name="mat_aluminum_extrusion_tslot_1010", materialType="Generic")
mat.setProperty("diffuse", (58, 58, 61)) # 8-bit sRGB
mat.setProperty("metallic", 1.000)
mat.setProperty("roughness", 0.450)
mat.setProperty("indexOfRefraction", 1.450)
mat.setProperty("transparency", 0.000)
mat.setProperty("coatingWeight", 0.000)
{
"_format": "Substance Designer / Painter \u2014 pbrMetalRough constants",
"_about": "Aluminum T-Slot Extrusion, 1010 / 25mm Imperial Series (80/20-style) \u00b7 finish: metallic",
"baseColor": {
"r": 0.0423,
"g": 0.0423,
"b": 0.0467
},
"metallic": 1.0,
"roughness": 0.45,
"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_aluminum_extrusion_tslot_1010",
"pbrMetallicRoughness": {
"baseColorFactor": [
0.0423,
0.0423,
0.0467,
1.0
],
"metallicFactor": 1.0,
"roughnessFactor": 0.45
},
"extensions": {
"KHR_materials_ior": {
"ior": 1.45
}
}
}
]
}# USD Preview Surface — UsdShade.MaterialLook prim attributes
# Aluminum T-Slot Extrusion, 1010 / 25mm Imperial Series (80/20-style) · finish: metallic
def Material "mat_aluminum_extrusion_tslot_1010" {
token outputs:surface.connect = </mat_aluminum_extrusion_tslot_1010/PreviewSurface.outputs:surface>
def Shader "PreviewSurface" {
uniform token info:id = "UsdPreviewSurface"
color3f inputs:diffuseColor = (0.0423, 0.0423, 0.0467)
float inputs:metallic = 1.000
float inputs:roughness = 0.450
float inputs:ior = 1.450
float inputs:opacity = 1.000
float inputs:clearcoat = 0.000
token outputs:surface
}
}
Aluminum Association extrusion-recycling notes; 80/20 Inc. 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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