737 Tiller Mechanism – Original Design (2015)
Karl’s very first design from 2015, created before the website launch, remains one of the most downloaded items of all time. Its simplicity and clever engineering make it a favourite among builders.
This design is aimed at those wanting a DIY build that closely replicates the real unit installed on the Boeing 737, using their home 3D printers.
While it doesn’t deliver the extreme torque of the genuine 737 unit, the integrated spring system provides excellent feedback and smooth centring, making taxiing feel natural and responsive.
 
The unit features:
Self-centring mechanism
Analogue operation
Fits a standard 220mm 3D print bed
 
Key Highlights:
Simple, enjoyable build: Originally designed for the Creality Ender 3, perfect for hobbyists and enthusiasts.
Complete package: Includes STL files, CAD models, and the original build guide.
Extra resources: Wiring diagram available here
Flexible printing options:
The entire unit can be printed with filament.
Handle can be resin-printed for a premium finish.
 
Download the ZIP file, which now includes the design and STL files ready to print!
Once you experience taxiing with a tiller instead of rudder pedals, you’ll appreciate how much easier ground handling becomes.
Happy Building!