The solanoid or electro magnetic lift is to raise a plastic sheet:
300cm (squaree) - Slightly bigger than a VHS tape
Wieghing 10gramms
Rising slowly to desired position
Returning to its start positiop.
A solenoid is the wrong part for the job then. They have a quick snap action.
A servo or other geared motor with a cam would be more suitable if you want it to operate slowly.