This model is a flat dual connector (4080 joiner) designed for 40×40 T-slot aluminum extrusion profiles.
It allows you to join two 4040 profiles side-by-side to form a 4080-style beam, maintaining alignment and structural strength without screws or metal brackets.

Features:

🧱 Flat dual layout — connects two 4040 profiles horizontally (forming a 4080 section)

🔩 Friction-fit connection — strong hold in grooves, easy to slide for adjustment

⚙ Precise rounded geometry to match most T-slot 4040 standards (Bosch, Item, Motedis, etc.)

🖨 No supports required, prints flat on the bed

🔧 Ideal for CNC frames, large-format 3D printers, laser machines, and enclosures

Fits tightly on most 4040 profiles; for a perfect fit, adjust tolerances by ±0.1–0.2 mm depending on your extrusion type.