Aerostock : "magnetic" carriage add-on

to go with the magnetic effector, I've printed a temporary add-on to my carriages in order to replace the blue ball-links and the aluminium profile.
Once instakked, I'll print a final all in one magnetic carriage set.

Meanwhile, the SCAD is joint an can be freely used to patch rostock or other carriages ...

here is an insane speed test : http://youtu.be/R3WuQjNps9E

edited to give more room to the magnet (+2/10mm in diameter)

edited: After having assembled the whole things on my de