2020 T Slot 700mm Aluminum Extrusion Rail - Strong, Clean Finish

Our review of the 2020 T Slot 700mm Aluminum Extrusion finds it best suited for makers and hobbyists who need a compact, rigid extrusion for desktop CNC, 3D printer frames, or small automation rigs; the single biggest reason to buy is the combination of European-standard high-strength 6063-T5 alloy and an anodized surface that yields clean edges and a tidy appearance. The package of four 20 x 20 x 700mm rails provides immediate material for small frames or reinforcement, and the T-slots accept common M3, M4, M5 hardware for flexible mounting.

Key Features

• European standard profile: Built to a consistent 2020 profile that offers reliable dimensional accuracy for repeatable assemblies and linear guides.
• Anodized surface: The anodized finish makes the rails smoother and cleaner, helping reduce surface contamination and improving scratch resistance in many uses.
• 6063-T5 alloy: The material provides a high strength-to-weight ratio suitable for light structural and linear motion applications.
• Four T-slots: Four grooves allow M3, M4 or M5 T-slot nuts and pulleys to be mounted on multiple faces for flexible system layout.
• Pre-cut 700mm length: At 700mm (about 27.56in) each, the rails are ready for small printer frames, CNC bed reinforcement, or custom stands without immediate cutting.

Who It's For

The 2020 T Slot 700mm extrusion is ideal for hobbyists, small shop machinists, and 3D printer builders who want a compact, sturdy profile for frames, workbenches, or upgrades like CNC bed reinforcement. It works well where a moderate length and multiple fastening faces are needed without the expense of larger industrial profiles.

Those who require heavy industrial load capacity, long-span structural members, or precise pre-drilled mounting patterns should look at heavier gauge profiles or purpose-made linear rails; this product is optimized for light to medium DIY and prototyping tasks rather than full-size industrial automation installations.

Pros & Cons

Pros

• High-strength 6063-T5 alloy provides reliable rigidity for small frames and reinforcements.
• Anodized finish yields a cleaner surface and generally better scratch resistance in normal handling.
• Four T-slots accept common M3, M4, M5 T-slot nuts and pulleys for flexible mounting options.
• Sold as a set of four pre-cut 700mm pieces, ready for many DIY projects without immediate cutting.

Cons

• Scratch resistance reports are mixed; some users note it can mark under rough handling.
• Holes or attachment points may require additional drilling or attention to match custom designs.

Specifications

Profile	2020 (20 x 20 mm)
Quantity	4 pieces per package
Length	700 mm (27.56 in)
Material	6063-T5 aluminum
Surface Finish	Anodized
T-slot Compatibility	Fits M3, M4, M5 T-slot nuts and pulleys

Our Verdict

The 2020 T Slot 700mm Aluminum Extrusion is a solid value for makers and small shops who need compact, accurate, and easily mountable aluminum profiles; its anodized 6063-T5 construction delivers good strength and a clean finish, making it particularly useful for 3D printer frames, CNC bed reinforcement, and light automation tasks. For heavier industrial applications or where factory-drilled holes are required, consider heavier profiles or specialized rails.

Frequently Asked Questions

Are these extrusions ready to use out of the box?
Yes, they come as four pre-cut 700 mm rails with anodized surfaces, but some users drill additional holes or trim lengths to suit custom assemblies.

What fasteners fit the T-slots?
The T-slots accept common M3, M4 and M5 T-slot nuts and compatible pulleys for mounting components and brackets.

Is the surface durable against scratches?
The anodized finish improves scratch resistance for normal handling, though some users report light marking under heavy abrasion or rough use.