A machine with stationary ball

Hi, coach!

What do you think about the following robot: 

https://www.youtube.com/watch?v=DdiS-CnlreI

Will it help to improve technique of strokes? I remember that you said stationary ball doesn't help. Will training with such machine damage technique?

Hi ardak,

I think these are good to start with for a few minutes but the real skill is to hit a moving ball that is coming towards you and still get that contact.