This is the second version of the vibrating table.
This new table uses an electromagnet oscillating at 50Hz to make the vibrations for the table. It has more vibration power than the first which used a motor with an offset weight. since the table has more power, the spring needed to be upgraded to heavier duty springs. As an experiment, I tried to use Prototyping PCBs from PCBWay and somehow works very well. the electromagnet used is listed below