Teasing to the Edge While Denying Orgasm

Hello everyone, I have been lurking here for a long time. But I thought it was time to finally step out and ask some questions while sharing a bit about myself. Bondage has been part of my life as far back as I can remember, and since I didn’t have a partner when I started, I began with self-bondage. Over time, my sessions became increasingly complex. Being a programmer comfortable with electromechanics made it easy for me to start using my computer to control various vibrators. Now, my usual setup includes a vibrating butt plug alongside a vibrator motor taped near the head of my cock. I discovered that cranking up the penis vibrator speed causes me to cum much faster. During these sessions, I experimented with different routines: keeping the penis vibrator on a low setting while letting the buttplug run at nearly full power. I wrote programs that randomized these routines, featuring built-in teasing and “wait” phases where there is no vibration, as well as a “make me cum” button that I press immediately after my release.

While this process is both enjoyable and frustrating for someone who is bound, I wondered if I could refine it further. Through discussions on various forums with others, I noticed that it is practically impossible to cum without squeezing your pubic muscles—the same ones that squeeze the anus and pump blood into the penis, etc. I think we all know what those feel like. Try it while aroused: when you squeeze, you’ll notice your penis twitching as more blood forces its way in. Attempt coming without moving those muscles; as arousal builds, holding back becomes harder, and right before (and during) orgasm, you are forced to contract them. These are the same muscles used for squirting. Often, muscle twitching starts long before climax, but with training, you can delay it until giving in results in truly intense orgasms. Among “experts,” this technique is known as “edging”—staying close to orgasm continuously.

So my search focused on how to detect these muscle twitches. If I could reliably sense them, I could vibrate myself right up to the edge and stop teasing just before release upon detecting a contraction. I tried several techniques. One attempt used “penile plethysmography.” A US company produces tiny rubber wires filled with liquid metal (Indium Gallium gauges, that increase resistance when stretched. I built a small circuit board to amplify these changes and tested it on my penis. It worked well because the penis diameter increases during a twitch. I was convinced I had found the holy grail for self-bondage fans, but there were downsides: the sensor was so sensitive it picked up vibrator vibrations; since penile diameter varies greatly from flaccid to erect, continuous adjustment was needed; and the single-use wire felt delicate enough that it might tear over time.

My search continued because I wanted specific features:

• Reliable muscle twitch detection
• Independence from penis diameter
• Independence from wearer’s “size”
• Usability with E-Stim (resistant to e-noise)
• Resistance to body motion (allowing squirming or humping without false triggers if no muscle contraction occurs)

These constraints led me to a simple yet effective solution: Light! I built an infrared sensor similar to those used in hospitals for detecting heartbeats. psensor_built_1.jpg

This is the sensor part of my development. As you can see, it houses an infrared sender and receiver inside a small foam casing. The device sits at the base of your penis, just above the scrotum on the underside over the urethra. I use a silicone sleeve to hold it in place. It works by emitting a light pattern and measuring how much passes through the skin; this amount varies with blood flow there. Look at this picture: psensor.jpg

The signal is received by a circuit that amplifies and filters it (removing noise, etc.), then sends it to my PC via an analog-to-digital interface.

I have tested this device for several months now. It has proven so effective that it completely changed how I do bondage and even how I behave while bound. When I locked myself up with the sensor for the first time, watching porn as my penis vibrator drove me crazy, I reached a point where I couldn’t hold back the muscle squeeze anymore but felt no release when the vibrations stopped—I truly screamed my frustration into my gag. I haven’t felt anything quite like it while playing alone. In all subsequent scenarios (I’d say 20-30 sessions), I was unable to cross over the edge for a full orgasm, remaining constantly on the brink of “almost.” I also fine-tuned the software to work with both vibrators and the sensor. The program runs a slideshow of teasing pictures, slowly raising arousal via increasing vibrator intensity until you are about to come. If you do… it can decide what happens next—punishing you however you wish (e.g., long periods without teasing, a whipping motor, a fucking machine, electric shocks, butt-plug-only stimulation, inflating gags, using pumps for various liquids, etc.). It is really your choice.

Now I have a few questions for everyone!

• Can you cum without squeezing your muscles? Try it yourself.
• Girls, several people told me this pre-orgasm muscle squeeze (and the inability to come without it) applies similarly to female anatomy. Is that true? Do you think there is a spot on your body where you could detect this squeezing? Perhaps near the clit where blood flow increases during such contractions?
• Would you be interested in such a device if it works well?

I have been thinking for a long time (driven by personal need as much as anything) to open a small online store focusing on bondage supplies, especially self-bondage. I know there are several stores out there, but they often charge ridiculous prices for poor quality items in my opinion. I envisioned a community-focused shop where, alongside other well-tested gear, I could sell DIY creations like the device mentioned above, complete with circuitry and software.

I just want to hear some opinions! (Perhaps I can give away some beta-test sets;-)) Thank you very much, Your Pony