aerostock delta magnetic effector

ball links are replaced by countersunk ring magnets (15mm x 3mm) + steel balls (12mm).
The balls are drilled to 4mm and a 4mm carbon rod is inserted and CA glued in the hole.
It can be viewed in action on youtube "aeropic" channel
http://www.youtube.com/user/aeropic
item number : UUA9ii2vFh3SarF4TDDmS7IA
http://www.youtube.com/watch?v=8bEPf3gQgoA&list=UUA9ii2vFh3SarF4TDDmS7IA&index=1
A thread is also active: "aerostock delta"
https://groups.google.com/forum/#!topic/deltabot/Ae_R939