Spring and Ball Rostock Dual-JHead effector assembly

My dealings with these magnetic setups and their lack in strength, as well as relatively being very expensive, Has led me to this...

Still using the 10mm Ball-tipped carbon rods, but replacing the magnets with springs, and the cups are just designed into the effector-plate and runners.

much smoother movement with virtually no friction on the joints, and they don't pop off for the slightest of unhindered travel.