Pull to tighten mechanism
Posted: 28 Aug 2017, 23:17
Hello all !
One frustration I had from my self-bondage sessions is that all mechanisms to tighten a rope or a strap always required a second rope to pull. The most basic example is the ring device. When you pull on one side, it tightens the other side. I don't like it because you need to make sure you can access that other rope, and it doesn't provide a good helplessness feeling. I always wanted to have something that would be like "the more you pull, the more it's going to spread you"
But that is hard. You cannot expect something to pull from you if you pull towards you at the same time !
So the only alternative was to design something that would allow you to pull the rope towards you, and then let the mechanism pull back from you, and let you repeat the process until you feel like the rope is nicely tight.
Here is the design: https://i.imgur.com/8fdS1Ux.jpg
It is inspired from ratchet straps (https://www.google.fr/search?q=ratchet+strap), and can probably be constructed from one. The main difference is the presence of a strong circular spring required to pull back and be able to repeat the process (In a typical ratchet strap, the operator does both pull and push, while for self bondage a spring needs to be used since we can only pull).
Imagine the left side bound to some anchor using an ice-lock mechanism. The right side is bound to your wrist (Have a second one for a second wrist, and do a spread eagle on your bed, or whatever position you like such that your hands cannot touch the mechanism).
You can bound yourself while the straps are lose. Once you are done, every time you pull on the strap, the mechanism will react by gently pulling the straps back by a few inches. It is not going to pull you with a lot of strength, but once you let go just a bit, you will never be able to get back the few inches of rope you gave up.
As long as you do not pull further, it is not going to eat more strap, so you will still be able to stretch a little if you need to. Similarly, it is not going to pull you with more strength than the rotating spring is capable of. So I think the mechanism is not going to cause any harm (as long as you have a good release and safety release mechanism, of course).
But here is the trick. Every time you will feel like checking if the ice lock is lose, you will have to pull the rope. And every time you pull, you will have to pay the price... A few more inches of rope.
Again, it is not going to pull your arm off. But if you started the session with some lose rope, it is likely that your impatience will get you in a well tightened spread eagle.
Please tell if you have any idea to improve the mechanism (feature and safety), and let me know if you have an idea how to build one !
Have fun (safely).
One frustration I had from my self-bondage sessions is that all mechanisms to tighten a rope or a strap always required a second rope to pull. The most basic example is the ring device. When you pull on one side, it tightens the other side. I don't like it because you need to make sure you can access that other rope, and it doesn't provide a good helplessness feeling. I always wanted to have something that would be like "the more you pull, the more it's going to spread you"
But that is hard. You cannot expect something to pull from you if you pull towards you at the same time !
So the only alternative was to design something that would allow you to pull the rope towards you, and then let the mechanism pull back from you, and let you repeat the process until you feel like the rope is nicely tight.
Here is the design: https://i.imgur.com/8fdS1Ux.jpg
It is inspired from ratchet straps (https://www.google.fr/search?q=ratchet+strap), and can probably be constructed from one. The main difference is the presence of a strong circular spring required to pull back and be able to repeat the process (In a typical ratchet strap, the operator does both pull and push, while for self bondage a spring needs to be used since we can only pull).
Imagine the left side bound to some anchor using an ice-lock mechanism. The right side is bound to your wrist (Have a second one for a second wrist, and do a spread eagle on your bed, or whatever position you like such that your hands cannot touch the mechanism).
You can bound yourself while the straps are lose. Once you are done, every time you pull on the strap, the mechanism will react by gently pulling the straps back by a few inches. It is not going to pull you with a lot of strength, but once you let go just a bit, you will never be able to get back the few inches of rope you gave up.
As long as you do not pull further, it is not going to eat more strap, so you will still be able to stretch a little if you need to. Similarly, it is not going to pull you with more strength than the rotating spring is capable of. So I think the mechanism is not going to cause any harm (as long as you have a good release and safety release mechanism, of course).
But here is the trick. Every time you will feel like checking if the ice lock is lose, you will have to pull the rope. And every time you pull, you will have to pay the price... A few more inches of rope.
Again, it is not going to pull your arm off. But if you started the session with some lose rope, it is likely that your impatience will get you in a well tightened spread eagle.
Please tell if you have any idea to improve the mechanism (feature and safety), and let me know if you have an idea how to build one !
Have fun (safely).