DYI Chastity tube

Some success... I used 1-1/4inch vinyl aquarium tubing for the penis tube, and 5/8 inch tubing to form the strap. I slit the 5/8th open, to make a flat ribbon. The nice thing is that it holds the tubing's 'curl', so it flares away from the scrotum on both sides, making it very comfortable. A single aluminum stud secures the two ends of the strap to the tube, and the strap holds the scrotum so that the testicles cannot retract.

The vinyl is rather tacky to the skin - this makes pull-out nearly impossible. Installation is only possible using the nylon stocking trick. You feed a nylon through the tube, then tuck the penis in the open end. Pull the nylon through completely, and the penis is neatly deposited snug inside the vinyl tube. Urination is easy - sitting down, of course.

I need to work on a neat way to close the tube end - I'm thinking maybe stainless steel wires to form a mesh.

I admire your determination, but maybe you have too much free time on your hands.
bobknn