模块化台下 T 型插槽导轨系统 + 滑动式附件（线缆管理套件）

Under desk organizer rail / cable management rail with T-slot slide-in attachments (headphone hook, cup holder, shelves, storage bin, controller holder)

A modular under-desk T-slot rail system with slide-in attachments for clean cable management and desk organization. No supports required.

DESK RAIL MODULAR SYSTEM (T-Slot Slide-In) – Mega Bundle

Clean up your workspace with a strong under-desk rail and modular slide-in attachments.
Mount the rail under your desk, then slide accessories in from the side and rearrange anytime.

What’s included

✅ Rails (full length): 300mm / 400mm / 500mm
✅ Modular rail segments (150mm): Open End + Middle + Closing End (build custom length for smaller printers)
✅ Attachments:

Headphone Hook

Small Storage Bin (keys / USB / flash drives)

Shelves: 100mm + 170mm

Cup Holders: D40 + D50

PS5 Controller Holder

Cable Clips: 4–10mm / 5–12mm / 6–14mm

Printing

Supports: NO

Recommended material: PETG (PLA also works)

Layer height: 0.20mm

Walls: 3

Infill: 20% (attachments), 25–35% (rails/heavier parts)

Orientation

Place the biggest flat face on the bed and keep the sliding T-slot/key feature facing UP.

Installation

Screw the rail under the desk, then slide attachments from the side.

Note: Electronics/devices shown in images are not included.

Recommended 3D print settings

Process: FDM / FFF

Material: PETG recommended (best strength + heat resistance). PLA works for light use.

Nozzle: 0.4 mm (0.6 mm also OK)

Layer height: 0.20 mm (0.28 mm for faster prints)

Perimeters / Walls: 3 (use 4 for cup holder / shelves / rail)

Top/Bottom layers: 4–5

Infill:

Attachments: 20%

Rails / heavy parts: 25–35%

Supports: OFF (designed to be support-free with correct orientation)

Bed adhesion: Brim optional (recommended for long rails to prevent warping)

Orientation

Rails: place the flat mounting face on the bed, keep the T-slot opening facing UP

Attachments: place the largest flat face on the bed, keep the sliding key/T-slot feature facing UP

Assembly / installation

Mount the rail under the desk using wood screws (recommended).

Slide attachments into the rail from the side.

Modular rail (150 mm segments): connect segments end-to-end until fully seated/aligned. If fit is loose, use a tiny drop of CA glue (optional).

Tolerance note

If your printer is very tight/loose, test print one small piece first.

If sliding is too tight: lightly sand the key/slot edges.