I've tried this for a while but I couldn't get the pressure to rupture the machinery. How do I do it?

here is how you do it

1. Fill the 5 container to max
2. transfer the 5 container into the 3 container
(this puts 3 in the 3 and 2 in the 5)
3. empty the 3 container
(this puts 0 in the 3 and 2 in the 5)
4. transfer what is left in the 5 container to the 3
(this puts 2 in the 3 and 0 in the 5)
5. fill the 5 container to the top
(this puts 2 in the 3 and 5 in the 5)
6. finally transfer the 5 to the 3
(this puts 3 in the 3 and 4 in the 5)