Parametric Foldable Under-Desk Cup Holder

Fully 3D Printed Foldable Mug/Cup Holder

A foldable mug/cup holder designed to mount under a desk, table, shelf, or workbench.

The model is fully 3D printed and parametric, so you can customize it for different mug or cup diameters before printing.

✨ Features

Foldable under-desk design

Fully 3D printed

Parametric/customizable cup diameter

Print-in-place moving section

Can be mounted with screws or double-sided tape

Good for desks, offices, gaming setups, workshops, and small spaces

📐 Customization

A detailed customization guide is included in the attached document.

The document covers:

Parameter definition — page 2

Preparing the model in Bambu Studio — page 5

Assembly steps — page 7

⚙️ Main parameters:

Mug diameter

Measure your mug/cup and add around 5 mm extra clearance.

Tolerance Join

Used for the hinge tolerance. Recommended value: 0.25 mm.

Tolerance

Distance between separate moving objects. Recommended value: 0.2 mm.

Screw diameter

Diameter of the screws used for mounting.

Thickness

Thickness of the print-in-place model.

Recommended value: 6 mm (max 10 mm).

After customizing, export the model as a 3MF and open it in Bambu Studio.

🧩 Important Bambu Studio Preparation

After opening the customized 3MF:

Right-click the model and select Split to objects.

Move the main body frame and the hex-pattern coaster.

The two side pins are optional; they can be moved or left in place.

Do not move or auto-arrange the plate that contains the print-in-place objects.

This can break the alignment needed for the moving mechanism.

Strength recommendation:

Walls: 4

Infill: 20%

Assembly

The holder can be mounted using screws or strong double-sided tape.

Install the main body frame by aligning its face with the desk/table edge.

Slide the print-in-place holder section all the way back.