This is a reinforced internal 90° connector for 2020 V-slot aluminum extrusion profiles.
It fits snugly inside two intersecting profiles, joining them at a perfect right angle (90°) with a secure snap-fit / friction-fit connection.

This updated version is stronger and thicker than the original minimalist connector — designed for applications requiring greater frame rigidity and load support.

Perfect for use in CNC machines, 3D printer frames, enclosures, or robotic assemblies, where compact internal corner joints are preferred over bulky external brackets.

✅ Features

Reinforced version of the standard internal 2020 connector

Creates a clean 90° internal joint

Snap-fit design, no screws or T-nuts needed

Compact and flush inside the frame

Improved strength and fit precision

Easy to print and install

🧰 Applications

3D printer and CNC frames

Enclosures and machine corners

Robotics and modular structures

Projects requiring smooth external surfaces

🛠 Recommended Print Settings

Material: PETG / ABS for maximum durability

Layer Height: 0.2 mm

Infill: 60–100 %

Supports: Not required

Orientation: Flat on bed

📏 Compatibility

V-slot / OpenBuilds 2020

Also compatible with standard 20×20 T-slot profiles