Magnet joint
Magnet joints are much easier and quicker to assemble than other joints.
This makes them popular for making small scale models of mechanical arrangement,
to check for mechanical interference, singularities, etc.
before committing to a full-size machine with "proper" joints.
Some early RepRap/RepStrap prototypes, such early Delta and Viktor's tripod repstrap demonstrator, used magnet joints.
With the magnets on hand, these magnetic joints held 3 kg per joint.[1]
That seems to be more than enough to hold up a Bowden extruder at reasonable levels of acceleration and vibration. Which makes some people ask: why bother with complicated, difficult-to-assemble "proper" joints when magnetic joints work just as well, and perhaps better?
