What the 4040 V-Slot extrusion is for

The 4040 V-Slot Extrusion 20-Series (40mm x 40mm x 2.5m - Black) is a precision-engineered aluminium profile for strong, modular, and customisable builds. It provides a rigid yet lightweight structural base for machines and frameworks that also benefit from built-in linear motion capability.

This 20-Series extrusion is suited to CNC machines, 3D printers, automation systems, robotics, and DIY projects. The V-Slot format combines frame-building flexibility with guided motion using wheels and bearings.

Key features of the 40x40mm 20-Series extrusion

• 6063-T5 aluminium construction supports builds that need low weight, good strength, and corrosion resistance.
• Black anodised finish adds durability and gives the extrusion a clean, professional look.
• V-Slot profile design incorporates an integrated linear rail system for smooth motion in wheel-and-bearing assemblies.
• Modular 20-Series format supports flexible machine and framework layouts across compatible extrusion sizes.
• Precise machining helps maintain consistent slot width and accurate connections across assembled structures.

Where 4040 V-Slot extrusion is used

CNC and 3D printer frames

The 4040 profile provides rigid, customisable support for motion systems and machine frames. Its balance of stiffness and weight makes it practical for builds that need dependable alignment.

Automation and robotics structures

This black V-Slot extrusion is well suited to machine enclosures, actuators, and modular frameworks. The profile can be incorporated into systems that combine structure and guided movement in a compact format.

DIY, workshop, and industrial fabrication

The 40mm x 40mm extrusion is also used in furniture, workstations, and heavy-duty project assemblies. For makers and builders who need strength, adaptability, and precision, the 4040 V-Slot profile serves as a core component in high-performance structural and motion systems.