๐๏ธ Screw Elevator
21 Jan 2026 | by Marta
This project features a motorized Archimedean Screw that lifts the ball back to the starting point, creating a mesmerizing loop.
๐ ๏ธ Project Details
- Ball Size: 12.7 mm (0.5 inch) marbles.
- STL file
- Onshape model
Itโs an experimental but working build, perfect for anyone interested in mechanical automation and marble runs.
โ๏ธ Technical Specifications
- Lift Mechanism: Archimedean Screw (ลruba Archimedesa).
- Drive: 28BYJ-48 Stepper Motor.
- Ball Size: Designed for 0.5" (12.7mm) bearings.
โ ๏ธ Critical Assembly Note (Read before printing!) During the prototyping phase, I discovered a tight clearance issue in the main housing. To make the motor fit correctly you must cut off one of the motor mounting tabs/brackets. ๐ช