new inescapable lockable chastity device no piercing needed

I’m working on creating a locking chastity device that genuinely stops pullout without needing a piercing. If you’re familiar with the tetherspout, it slides into the urethral tip and hooks there. It’s great for extended wear and very secure, though pricey, doesn’t fully lock, needs tweezers to insert, and is time-consuming. I’m looking at a comparable design but using a screw mechanism like a wine cork opener with an external ring for a padlock. You essentially twist it into your urethra with minimal effort, and removal requires twisting it back out. I was thinking about 3d printing metal versions in various sizes. Are any 3D CAD designers interested?

Hey, are you still seeking an inescapable design? I'm just learning CAD design and looking for ideas. Could you sketch your thoughts so I can try to draw them up in CAD for 3d printing?

Can I get into that kind of the chastity