Ice lock homemade

Various ideas on the internet to make a self-made Bondage ice lock 
Idea;

http://latex-slaaf.blogspot.nl/2017/07/i...-lock.html

   

After a first test, he was locked for 30 minutes because he had been in the freezer shortly, but think that this works well

[Like Ra]

Looks good! I think that more holes in the shaft should increase the holding time.

because the water can rise , when the ice is forming ?

[Like Ra]

To increase the amount of holding spots.