4040 T-Slot Aluminum Extrusion, 1000mm, 4-Pack, Black

4040 T-slot aluminum extrusion profile rails deliver rigid, modular framing for CNC, 3D printer, and automation builds—without welding. This 4-piece set uses European-standard 40x40 mm anodized 6063-T5 aluminum for corrosion resistance and smooth, low-friction motion. Precision-cut surfaces help reduce burrs and snagging during assembly, while the side grooves accept common T-slot hardware for fast, adjustable setups in workshops, makerspaces, and prototyping.

• Includes 4 rails to build frames, linear guides, enclosures, jigs, and machine bases with consistent alignment.


• Delivers stable 40x40 mm structure to reduce flex and vibration in CNC routers, laser engravers, and printers.


• Supports M6/M8 T-slot nuts for quick positioning, easy add-ons, and repeatable adjustments as projects evolve.


• Resists corrosion with anodized finish for reliable use in humid garages, workshops, and industrial spaces.


• Enables smooth assembly with precision-cut, burr-minimized edges that help lower friction and maintenance needs.

Build cleaner, stronger DIY machines and fixtures with extruded aluminum rails designed for modular systems. The T-slot design makes it easy to mount brackets, panels, motors, and accessories, then reconfigure later without drilling new holes. Use these profiles for 3D printer frames, CNC gantries, workbenches, automation equipment, or custom furniture where straight, durable rails matter. Hardware such as nuts and bolts is not included—pair with your preferred T-slot fasteners to match your build. Grab yours today and start your next frame with confidence.

• Quantity: 4 pieces


• Length (each): 39.37 in / 1000 mm


• Profile size: 40 x 40 mm (T-slot 4040)


• Material: 6063-T5 aluminum alloy


• Surface treatment: Anodized


• Compatible T-slot nut sizes: M6, M8


• Center hole size: Φ0.26 in / Φ6.8 mm


• Total net weight (set): 9.7 lb / 4.4 kg