Punching can also be used to create texture, that is to make subtle bumps in a receiver liner. You take a length of liner material and you punch it with a pattern of holes in the middle part of its length. Whether you think of this as a full length constrictor, or a texturizing sleeve does not matter. But when it is installed with significant tension from end to end, it will interact with the real liner installed inside it. This example was quickly punched freehand. It would have been better to mark out the pattern first to get it nice and even, and take greater care with the punching. You can see some cleanup is needed on some of the holes. I discovered that doing the punching with a soft pad under the latex, like a layer of disposable paper napkin on the cutting board, also helps get a clean cut all the way through both layers of the latex.

If done right, it can be quite effective in generating a subtle texture or bumpiness to the subsequently installed real liner. You may note the receiver being used for this demonstration setup has been cut shorter than usual to keep trapped air volume to an absolute minimum. Also it is set up for the end cap on the end with the tubulation. The constrictor is on the right in this photo.

12/03