Quick update for the four spring set up
The four spring set up looks decent with the first layer done but it is unable to be build higher than one level as there is some problems with attaching more plates on it due to the design (I forgot to add a hole for one part of the spring). I did manage to stack up to five plates before it starts to sway one side. I need a total of 10-12 plates to get the scale of the movement correct. This also means that four spring per plate is not enough to sustain the sway that gravity imposes on the set up. I will have to do a five spring per plate set up for my next mock-up to see if it can stand on its own.