I think i described it somewhere else, but i'll put pictures here anyway.
You did, with the same pictures :
http://igkt.net/sm/index.php?topic=4016.msg24885#msg24885 ( I suggest you better keep a record of your posts, knots and pictures, according to subjects, possibly labeled by some key words, so it will be easy for you to refer to them in the future.
If the pictures of the knot(s) were taken against a solid colour background, it would be much easier for the reader to follow the paths of the individual lines. The details of the backgound are getting mixed with the outlines of the ropes, and this makes your pictures less easy to read...)
P.S. However, I have to thank you for this repetition of this series of pictures...

It offered to me the opportunity to tie your knot again - and to remember why I did not like it the first time I saw it... The sharp curves that are formed when the standing ends pass through the collars, the way they pass through them, can not be retained for long. When the standing ends are tensioned, they are aligned, and so they drag the tails, and they force them to slip out of the central nipping structure - so, in the final tight form of the bend, the collars can not but remain elongated, and the knot settles in a non-compact, "loose" form. I always prefer the compact knots, which convey an impression of "rigidity" - although this has nothing to do with the security or not of the knot. So, I untucked the standing ends from the collars ( keeping the rest of the knot as it was), and then I tried to figure out a more direct, "straight" way to drive them igain into the knot. The first thing that had crossed my mind happened to work : The standing ends now follow the same paths as before, pass through the same collars, but penetrate them and enter into the knot s nub coming from the opposite sides. Is the result a more compact knot as I though it would be ? Knot at all !

The bend that was tied this way is a very flat, loose, and most "springy" knot - that deserves the name
"Springy bend", indeed. In fact, it is almost a rope-made spring, a very interesting knot, that I have never seen before - or that I do not remember seeing it before... What did I say ? That "
all the simple bends are already known" ? Well, I was wrong - again !

See : Springy bend :
http://igkt.net/sm/index.php?topic=4188