The crotch eight

The crotch eight is a chain in the form of an eight, which is to be put on like a pair of trousers. Your hands will be connected to it later. For the crotch eight you need the following:

One fairly big padlock. I use an ABUS N65/30. It has a body of 3.0 by 3.0 cm.
A chain with a length of 1.50 meter. If your legs are much stronger (thicker) than mine, you will need a longer chain. I use a chain with links that have a length of 3.5 cm.

Lay out the crotch-eight, as shown on the pictures below. Make sure that the chain fits tight around your legs, but is still comfortable, and easy to get on. My experience is that it does not make sense to make the crotch eight very tight. You will not be able to tie your hands very tightly to it anyway, and also you need some freedom in your hands in order to get free.

The left and the right side must have the same length. Count the links of the chain to achieve this. The incomplete links A and B together count as one complete link. Once you have determined the number of links that fits you, use a marker pen to mark it on the chain, so that you can easily find back the right size the next time.

The padlock should be big, so that you can easily lock the chain to your hands in it, and possibly a chain to your ankles. It should be in the orientation that is shown in the drawing. If you put it in the other direction, it will be harder to put the chain to the wrists in.

When you are a man, you are probably afraid for certain delicate body parts, but don't worry. Nothing will happen to them. They are quite far forward, and your hands will pull the crotch eight backwards.

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