Tired of constantly pushing your PC case just to reach the rear I/O ports?
 

Or maybe you simply want to showcase your build from every angle?
 

The Qube540 360° Turntable Base is a 3D-printable accessory designed specifically for the Cooler Master Qube540 case. Using a 5.5-inch (140 mm) Lazy Susan bearing, it provides smooth 360° rotation while maintaining a clean, minimal appearance.

Whether you're connecting peripherals, cleaning your system, or simply admiring your build, the rotating base makes accessing every side of your PC effortless.
 

Available Versions:

V1 – Low Profile

A compact version that keeps the case close to the desk while providing full 360° rotation.

V2 – Elevated Version

Uses the original Qube540 leg hardware to raise the case, creating additional clearance while maintaining the factory appearance.

Benefits:

• 🔄 Smooth 360° rotation
• 🔌 Easy access to rear I/O ports and cables
• 🖥️ Perfect for showcasing your PC build
• 📏 Saves desk space by eliminating the need to move the case
• 🔧 Makes maintenance and upgrades more convenient
• 🔒 Reduces strain on cables and connectors
• ✨ Adds a unique and modern look to any setup

Required Parts:

Hardware

• 1 × 5.5" (140 mm) Lazy Susan Bearing
• 4 × M4×16 mm Countersunk Bolts
• 4 × M4 Nuts

V1 Only

• 4 × Additional M4 Nuts
• Original Qube540 leg bolts

V2 Only

Reuse the original hardware from the Qube540 legs:

• 8 × Original bolts
• 4 × Original cylindrical leg spacers

A bearing blueprint with all required dimensions is included.

Assembly:

Common Steps

1. Remove the Original Legs

Remove all four Qube540 legs from the case.

Keep the original hardware, as some of it will be reused depending on the version you choose.

2. Assemble the Turntable Base

Insert the 5.5" (140 mm) Lazy Susan bearing into the recess of the printed base.

Align the outer ring of the bearing with the mounting holes in the base and secure it using:

• 4 × M4×16 mm countersunk bolts
• 4 × M4 nuts

Before continuing, verify that the bearing rotates freely.

3. Install the Printed Pins

Press the four printed pins into the holes of the inner bearing ring.

The pins are designed as a press fit, so a small amount of force may be required.

V1 – Low Profile Installation

1. Position the assembled turntable base directly against the bottom of the Qube540 case.
2. Reuse the original Qube540 leg bolts to fasten the base to the case.
3. Secure each bolt using the additional four M4 nuts.
4. Verify that the base is firmly attached and rotates smoothly through the full 360°.

V2 – Elevated Installation

Additional Parts Required

Reuse the following components from the original Qube540 legs:

• 8 original bolts
• 4 cylindrical spacers

1. Attach the four cylindrical spacers to the center mounting points of the case using the original bolts.
2. Position the assembled turntable base over the installed spacers.
3. Use the remaining original leg bolts to fasten the base to the spacers.
4. Verify that the case rotates smoothly through the full 360°.