Cage fit

Hi fellow cucks and wannabes.
As a wannabe ( wife has expressed no interest ) i will usually 3d print a chastity cage for when i am alone (traveling for work or she is traveling). This time I put on a new ring and it fit for a while. So I decided to take and iron and 'fuse' is shut while I was out of town since it seemed to fit.
Then I guess my sack shrank and it started hurting/pinching behind the balls. So much so that I had to break it off to relieve the pain.
Question I have is, was it too small? It is supposed to be painful behind the balls when the sack shrinks?

I don't know anything about 3D chastity devices. I've never seen one. I can say that it sounds as if your sack didn't shrink, but it distended a bit. Enough to make the device tighter, hence the hurting/pinching. I've had U rings that were too tight on my balls, so I had to custom order one that measured 2 1/4 inches in diameter. That made all the difference in the world.

When 3D printing a cage, can you specify the exact size you want? Measure yourself, if you haven't already. Length hard and soft. Tie a string around your ball sack right at the base, then measure the string. These are important numbers. Use them.

Man, I never thought that I'd be writing about ball sack measuring this evening.
Good luck!