Adjustable Telescopic Support (adjustable jack)

This adjustable telescopic cabinet support with thread (M32x4) is a stable, 3D-printed solution to securely fix furniture or cabinets between the floor and ceiling.
The model consists of an outer cylinder with an internal thread and an inner cylinder with an external thread, which can be precisely screwed into each other. By simply turning, the support can be extended or shortened millimeter by millimeter – completely without tools.

Ideal for, e.g.

• bracing cabinets against the ceiling,
• stabilizing shelves,
• or using as a variable support in workshops, campers, or home projects.

🧩 Technical Features

• Adjustment range: dependent on parameters such as min_length and max_extension
• Recommended materials: PLA, PETG
• Print orientation: vertical (thread axis = Z-axis)
• No support needed

🧠 Notes

• The threads were designed using the threads-scad library.
• For best results, first print a test piece (20 mm thread length) to check the fit of the tolerance.
• Tolerance can be adjusted between 0.4 – 0.6 mm, depending on the printer and material.

🧱 Special Features

• Compact, functional design
• Stepless height adjustment
• Mechanically durable and long-lasting
• Completely without metal parts

🏗️ Designer's Note:
This model was developed to be both functional and easy to print.
It is best to print several supports (2 – 4 pieces) to stabilize cabinets evenly.