Description
Technical Overview
The Inside Hidden Corner Bracket creates a hidden, internal 90-degree corner connection for 2020-compatible aluminum extrusion profiles. Because it slides securely inside the extrusion channel, this bracket ensures a flush and concealed joint that never interferes with external components or linear motion hardware.
Furthermore, builders can complete assembly quickly and easily by using the included set screws. Consequently, the connector delivers reliable structural stability across various mechanical frames, protective enclosures, and custom automation setups.
Applications
Engineers and builders frequently employ this internal bracket to construct the structural frameworks of 3D printers, CNC machines, robotics enclosures, and custom laboratory equipment. Therefore, it serves as an ideal solution for applications that require a clean aesthetic, or for projects where external mounting space remains restricted.
In addition, the connector securely joins standard 20-series T-Slot and V-Slot Linear Rails. As a result, it works exceptionally well in modular frame assemblies, particularly where structural corners must remain entirely unobstructed so that wheels or plates can clear the joints smoothly.
Technical Specifications


Technical Drawing:

Parts contained:
- x2 M5 Set Screws
- x1 Hidden Corner Bracket
Maker Store Tips and Tricks
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Ensure the aluminum extrusion is cut squarely at 90 degrees before inserting the bracket to achieve a flush and square joint.
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Slide the bracket fully into both extrusion channels before sequentially tightening the set screws to prevent misalignment.
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Check the tightness of the set screws periodically if the assembly is utilized in high-vibration applications like 3D printers or CNC systems.
Unsure if this product is compatible with our aluminium extrusions?
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