4080 aluminum extrusion, 10 mm slot (40-series) — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/4080-aluminum-extrusion/ (CC BY 4.0) Basis: Misumi 8 series, 10 mm slot, from Misumi's dimensioned drawing of this profile; every slot, lip, cavity, bore and outline number is the drawing's Catalog version: 2026-10-20 Overall (mm): width 80.0, height 40.0 - 4080 aluminum extrusion, 10 mm slot (40-series): 40 × 80 mm, 6 slots on a 40 mm pitch (Misumi 8 series, 10 mm slot). Source: Misumi's dimensioned drawing of this profile. Files: STEP and STL at 100, 1000 mm with square ends, and a DXF of the exact cross-section (mm), the master to extrude to any length. The section is centred on the origin and extruded along +Z from z = 0. - Slot: opening 10 mm, lip 5.5 mm thick at the opening, cavity 20 mm wide under the lips, 12.5 mm from the face to the cavity floor. Centre bore Ø10.5 mm per cell (the largest thread whose tap drill fits inside: M12, 10.2 mm). - Cavity side walls: the drawing gives the cavity width (20 mm) and depths but not the web thickness, so the side walls run at 45° from the corner under each lip straight to the floor: the smallest cavity those numbers allow. The bar has at least the real metal there, and a part that fits this cavity fits the real one. - The closed hollows between cells are not fully dimensioned on the drawing, so they are drawn filled: the outline, slots and bores are exact, the bar is heavier than the real one. - Outer corners R3 (stated). Also drawn: 6 × 6 mm closed corner pockets 2 mm in from both faces (stated; their corner radii are not given, drawn square). - Wrapping it: to make a part that fits around the bar, subtract the 1000 mm file (or extrude the DXF) from your solid; the outline is the drawing's 40 × 80 mm with no allowance, so open the pocket by your process's socket fit (see Mating features). - Attachments: the 40-series (10 mm slot) T-nuts, end caps, feet, brackets, gussets, plates and slot covers are cut from these same numbers; the fit check (tools/asm_extrusion_fit.py) placed each one on this profile with zero overlap. feature size from outline 40 × 80 mm, R3 corners drawing slot pitch 40 mm drawing slot opening 10 mm drawing lip thickness at the opening 5.5 mm drawing cavity width under the lips 20 mm drawing face to cavity floor 12.5 mm drawing cavity depth under the lip (at the cavity wall) 7 mm drawing core between opposite floors 15 mm pitch − 2 × face-to-floor diagonal web not given (45° walls from the cavity corner) assumed minimum cavity centre bore Ø10.5 mm × 2 drawing corner pockets 6 × 6, 2 in from the faces drawing cross-section area 1109 mm² maker's page mass 3.0 kg/m maker's page Ix / Iy 19.8 × 10⁴ / 71.9 × 10⁴ mm⁴ maker's page area of this model's section 1999.1 mm² computed from the DXF Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Misumi: 40x80 Aluminum Extrusion - 8 Series, Base 40: product page with the cross-section drawing and section properties — web — Misumi site terms [verify license at link] — https://us.misumi-ec.com/vona2/detail/110302690310/ - Misumi: 4080 dimensioned cross-section drawing — image — Misumi site terms [verify license at link] — https://us.misumi-ec.com/linked/item/10302690310/img/Picture1.jpg Free files (CC BY 4.0, Xem Studio; STEP + STL, 2 parts): https://xemstudio.com/files/hardware/4080-aluminum-extrusion/index.json API: https://xemstudio.com/api/geometry?object=4080-aluminum-extrusion