This is a universal end cap for 4040 T-slot aluminum extrusion profiles, designed to fit most common systems (Bosch, Item, Motedis, OpenBuilds, etc.).

The cap provides a clean, professional finish for open profile ends while protecting against dust and debris.

It features rounded outer corners to match the natural contour of the extrusion, giving your frame a more polished look.

The fit is friction-based, ensuring secure placement without glue or screws.

Because internal profile geometries can vary slightly between manufacturers, you may need to tune tolerances (±0.1–0.2 mm) in your slicer for an optimal fit.

✅ Features

Compatible with most 4040 T-slot profiles

Rounded edges preserve the extrusion’s clean look

Friction-fit connection – no fasteners required

Can be removed and reused easily

Tolerance-friendly design – slicer adjustment ±0.1–0.2 mm

Protects open ends from dirt and impact

🧰 Applications

Frame finishing and protection

CNC / printer enclosures

Furniture or machine structures

Clean visual finishing for modular builds

🛠 Recommended Print Settings

Material: PETG or ABS (recommended), PLA for light use

Layer Height: 0.2 mm

Infill: 50–100 %

Supports: Not required

Orientation: Flat on bed

📏 Compatibility

Fits most T-slot 4040 extrusions (Bosch, Item, Motedis, OpenBuilds)

Not fully compatible with Misumi 4040 (different internal geometry)

T-Slot 4040 End Cap (Universal Fit, Rounded)

0.2mm layer, 2 walls, 15% infill

0.2mm layer, 2 walls, 15% infill