The 2040 T-Slot Black Aluminum Extrusion Profile (1 Meter) is a modular, high-rigidity structural framing rail engineered for building robust machine chassis, linear motion systems, and industrial frameworks. Extruded from high-grade 6063-T5 aluminum alloy with a wear-resistant black anodized surface, this 20mm x 40mm dual-slot profile offers high torsional stiffness and versatile 6mm T-slot channels, making it an essential building block for custom 3D printers, CNC routers, laser engravers, and robotic automation frames.

Specification

• Profile Cross-Section: 20mm x 40mm (2040 Profile)
• Length: 1000mm (1 Meter / 100cm)
• Slot Type / Standard: Standard T-Slot (European Standard 20 Series)
• Slot Width: 6mm (Compatible with standard M3, M4, and M5 T-nuts)
• Material Grade: 6063-T5 High-Tensile Architectural Aluminum Alloy
• Surface Treatment: Deep Black Matte Anodized Coating (Corrosion, oxidation, and scratch resistant)
• Center Core Hole: Approx. 4.2mm - 5.0mm diameter (Tap-ready for Metric M5 / M6 threading)
• Dimensional Tolerances: Length tolerance within ±0.5mm; straightness tolerance ≤ 0.5mm/m
• Structural Profile: Dual-channel rectangular profile with reinforced central web structure
• Hardware Compatibility: Fits standard 2020/2040 corner brackets, joiner plates, drop-in T-nuts, spring ball nuts, and M5 low-profile socket screws.

Features

• High Torsional and Bending Rigidity: The rectangular 20mm x 40mm double-column design delivers twice the bending strength and load-bearing resistance along the major axis compared to standard 2020 single profiles.
• Versatile 6mm Modular T-Slot Channels: Features dual T-slots on the wide faces and single T-slots on the narrow sides, enabling secure mounting of brackets, linear guide rails, sensor mounts, and motor plates from all angles.
• Durable Black Anodized Finish: The electrolytic anodized coating creates a hard, non-conductive surface layer that resists corrosion, scratches, and workshop oils while providing a sleek, professional matte-black look.
• Tap-Ready Center Bores: The dual cylindrical end-holes are sized for direct M5 or M6 thread tapping, allowing secure blind-joint fastening and rigid end-to-end frame connections.
• Lightweight Structural Support: Delivers exceptional strength-to-weight performance, providing the structural stability needed for moving gantries and stationary frames without adding excessive mass.

Common Applications

• 3D Printer and CNC Router Frames: Constructing rigid vertical Z-axis pillars, base chassis, and moving gantry assemblies for DIY FDM printers, Voron/CoreXY builds, and small CNC engraving machines.
• Laser Cutter and Engraver Enclosures: Serving as primary structural rail guides and outer protective housing frameworks for diode and CO2 laser machines.
• Robotics Chassis and Automation Stages: Building custom robotic arms, automated pick-and-place frames, sensor test benches, and modular conveyor supports.
• Custom Workbenches and Laboratory Fixtures: Fabricating adjustable shelving units, display racks, camera rigging rigs, and electronics test station frameworks.

Professional Installation and Maintenance Tips

• Square Cuts Before Assembly: When cutting the 1-meter extrusion into shorter custom lengths, use a non-ferrous carbide-tipped blade on a miter saw and ensure cuts are clean, deburred, and true 90-degree angles to prevent frame racking.
• Use Quality 20-Series Drop-In T-Nuts: For fast assembly and post-assembly modifications, use roll-in or drop-in spring-loaded T-nuts (M4 or M5), which can be inserted directly into the 6mm slot without needing to slide in from the rail ends.
• Tap End Bores for Blind Joint Connections: Use an M5 or M6 spiral flute hand tap with a drop of aluminum cutting lubricant to thread the core holes on the extrusion ends for clean, high-strength perpendicular butt-joints.
• Tighten Frame Fasteners in Sequence: When assembling rectangular frames, use a precision engineer's square on all corners and tighten corner bracket bolts incrementally in a cross pattern (recommended torque approx. 3.0 to 4.0 N·m) to prevent twisting the chassis out of square.