Gravity Adjustable Heavy-Duty Phone Desk Stand

Tired of phone stands that sag under the weight of an Ultra or Pro Max smartphone?

This Gravity Desk Station is a heavy-duty, professional-grade solution designed for maximum stability and precision. It uses a smart mechanical linkage to secure your phone and a ratchet-style locking system to ensure it never slips.

🛡 Smart Gravity Locking System

- Automatic Grip: Simply place your phone on the base, and its weight triggers the side clamps via a 4-bar linkage system.

- Parallel Precision: Dual arc links on each side ensure the clamps stay perfectly vertical, preventing any phone tilt.

- Elastic Return: Uses a simple rubber band to automatically open the clamps when you lift your phone.

- Safety First: Built-in safety pins prevent the moving parts from over-extending.

⚙ Zero-Slip Adjustability

- Ratchet Tilt Joint: Instead of relying on friction, the tilt mechanism uses radial teeth (Hirth-style joint) for a rock-solid lock at any angle.

- Step-Lock Height: The telescopic arm features internal serrations and an M10 bolt, ensuring your desired height stays fixed even under heavy load.

- Dovetail Compression: The V-base connects via a precision dovetail joint for a wobble-free experience.

📐 Technical Specifications

Feature

Value

Clamping Range

70 mm – 118 mm (Fits 99% of phones)

Max Device Thickness

13 mm (Compatible with bulky cases)

Height Adjustment

+50 mm extension

Base Footprint

136 mm (W) x 128 mm (D)

Hardware Required

1x Rubber band, 3D printed M10 bolts

How to assemble the holder

Phone holder:

- Print List: 1 HolderBase, 1 HolderBottom, 1 HolderBottomStopper, 1 HolderSideLeft, 1 HolderSideRight, 2 HolderArcLeft, 2 HolderArcRight, and 10 HolderShims.

- You can use the provided .3mf file, where all of these objects are already arranged on the build plates.

- Tip: Try printing HolderArcLeft, HolderArcRight, and HolderShim on a smooth, non-textured plate. This will help the holder slide more smoothly.

- Take the HolderBase and place one HolderArcLeft and one HolderArcRight onto the middle pins, ensuring the arrows on the arcs are pointing inward .

- Tip: For better sliding and a cleaner look, it is best to place the arcs with the build-plate side facing away from the base.

- Secure the arcs using two HolderShim clips. Try to slide, it should be easy.

- Slide the installed arcs inward , then position the HolderBottom part so that the middle pins fit into the holes on the arcs.

- Place the HolderBottomStopper into the cutout on the HolderBottom part and into the hole in the HolderBase .

- Place the second HolderArcLeft and HolderArcRight onto the bottom pins of the HolderBase and the outer pins of the HolderBottomStopper , ensuring the arrows point inward.

- Lock the arcs in place with four more HolderShim clips.

- Tip: Test the slider. It should move easily; if it is too stiff, check the pins for any remaining support material or try reducing the height of the clips.

- Insert the HolderSideLeft part into the left side of the arcs so the pins fit into the holes, then secure it with two HolderShim clips.

- Repeat this process for the HolderSideRight part on the right side.

- Choose an elastic band size that allows the holder to compress the bottom part snugly, but without pushing the phone out of the mount when it was installed.