How to spin a fidget spinner with maximum velocity?

Physics doesn't always come in the form of books. It also comes in the form of toys.

So, I came across this fascinating toy that spins two minutes straight when given a spin. I got a chance to use it, but couldn't figure out where to thrust it. Every point that I tried on gave the impression that there was a better position somewhere else. From then, I have been left thinking,

Where to thrust the spinner, so as to make it attain the maximum angular velocity possible ?

I appreciate any ideas, but if we could project an answer supported by experimental data and mathematics for this, it would be great!

Here are some positions that I have tried spinning it:

Near the center of the iron armor:

The spinner attained the maximum velocity fast, so I guess it is very near to our answer.

Near the neck of the spinner:

Great force had to be applied, but the speed attained was fairly large.

Along the side of the limbs of the spinner:

Less force needed to be applied, but no appreciable increment in velocity.

(More creative methods are welcome!!)

Now the force needn't always be tangential as I had shown above.

You can think of changing the angle of line of action of the force, too.

• and spun round and round the merry-go-round... – Mozibur Ullah Jan 16 at 17:07
• What are you spinning it with? If it's a finger, then the force exerted at different locations might not be the same based on how easy it is to push there. – probably_someone Jan 16 at 18:11