No welding
The design can be built using ordinary workshop methods and flat steel components.
This is an exceptional project, but it does not require you to be an engineer. The most difficult work—developing the mechanism—has already been completed.
A technically capable adult who enjoys DIY, can work accurately and is familiar with common workshop tools has a realistic basis for taking it on.


The long development period included designing the motion, changing parts, testing the prototype and producing detailed documentation. You are not repeating that process. You are following the finished dimensions, specifications and sequence.
Realistic expectations
Build time: approximately 30–50 hours
Complete material cost: approximately €500
Skill level: intermediate to advanced
The design can be built using ordinary workshop methods and flat steel components.
The drive is based on a regular drill, a worm gearbox and a speed controller.
The guide already defines the dimensions, components and construction sequence.
The complete guide contains the construction steps, templates, dimensioned drawings, exact component specifications, materials list, sourcing guidance and troubleshooting in one illustrated PDF.
View the complete guide on Etsy