V-Slot Joiner (180° Inside Connector)

$2.00 Inc. GST

This 100mm zinc-plated steel connecting bar slides entirely inside the internal tracks of 20mm × 20mm aluminium extrusion profiles to butt-join two segments end-to-end at a 180-degree angle. Equipped with four pre-assembled M5 grub screws, the component establishes a mechanical bridge across the profile seam by applying internal clamping pressure directly against the inner channel walls. This fastening method creates a straight, flush linear extension without requiring drilling or end-tapping, thereby leaving the external face geometry completely unblocked for the installation of plates, brackets, or linear wheels. Typical applications include extending linear guide rails and structural framing profiles in CNC machines, 3D printers, and modular workstations, where single or multiple joiners can be deployed across the available tracks to scale structural length.

Compatible With

In stock

Description

Technical Overview

The V-Slot Joiner (180° Inside Connector) for 20 Series provides a specialized fastening bar designed to butt-join two segments of 20mm × 20mm aluminium extrusion end-to-end. Specifically, this component slides entirely into the internal tracks of the profiles. As a result, it creates a straight, seamless extension without changing the external surface geometry or blocking outer face access.

Furthermore, this hardware unit consists of a flat connection bar pre-assembled with four M5 grub screws. When positioned across the seam where the two aluminium segments meet, installers tighten the set screws directly against the inner channel walls. Consequently, this mechanical pressure locks both profiles firmly into alignment and establishes a structural bridge across the junction.

Applications

Engineers and builders utilise the V-Slot Joiner (180° Inside Connector) for 20 Series to expand or elongate framing structures without adding external bulk. For instance, the component fastens extension segments in custom 3D printer frames, CNC machine linear guide rails, and modular DIY workstations. Because the connector relies entirely on internal track tension, it requires no end-tapping or drilling of the aluminium bars.

Additionally, this installation method leaves the outer faces of the extrusion completely clear for mounting brackets, panel plates, or linear wheels. For applications requiring heightened structural rigidity, builders can insert one individual joiner into multiple or all four available tracks on the profile segment.

Technical Specifications

Specification	Value
Profile Compatibility	20 Series Aluminium Profile
Material	Zinc-Plated Steel
Length	100mm
Alignment Type	Self-aligning
Included Hardware	4 x M5 Grub Screws

Technical Drawing:

Maker Store Tips and Tricks

Ensure you slide exactly 50mm of the joiner bar into the first extrusion profile to guarantee equal structural engagement on both sides of the seam.
Tighten the grub screws evenly and incrementally rather than torquing one fully at a time; this uniform pressure maintains proper axial alignment between the bars.
For machinery subject to active vibration, consider adding a low-strength thread-locking compound to the pre-assembled M5 grub screws before final placement.