Desk Clamp for Phone Holders & Desk Lamps (up to 13 mm Mount)

This is a 3D-printed desk clamp designed to securely hold desk lamps or phone holders that use a mounting tip of up to 13 mm in diameter. If you have a desk lamp, phone holder, or similar accessory with this size tip, this clamp is a perfect fit.

The design is parametric, meaning you can easily adjust the dimensions if needed. The mounting size can be increased or decreased in 0.5 mm increments, making it simple to fine-tune the fit for your specific setup.

The clamp is designed to work with:

A large main screw for clamping to the desk

A small screw or hook-style fastener

The desk lamp or phone holder itself
Once tightened, it provides a firm and stable hold suitable for everyday desk use.

Printing Recommendations

Material: PETG (recommended for strength and durability)

Infill: 30–40%

You can go lower or higher depending on how strong you want it

Supports: Not required (depending on slicer settings)

For best results and to prevent slipping on smooth desks, it’s recommended to add a rubber or TPU pad to the clamp base or screw contact surface.