The build
What defines the project.
- Welded steel workshop frame
- Long threaded spindle for controlled pulling force
- Support against the bicycle frame
- Interchangeable fittings for different diameters
Project
A workshop tool we built to pull seized seatposts out of bicycle frames in a controlled way.

The story
When corrosion seizes a seatpost inside a frame, twisting and pulling by hand is often no longer enough. The Korkenzieher braces against the frame and uses a long threaded spindle to apply a slow, straight pulling force.
Views & details




The build
The result
The tool allows a corroded seatpost to be released slowly with steady, even pulling force.
endless bikes on YouTube
Our videos are in German. You can enable YouTube’s automatic English subtitles in the player.
Your idea