unlockable bend

[ianxm]

I'm not sure this bend is very useful, but it has an interesting property.  some knots can be slipped. pulling the working end causes them to vanish.  Pulling the working ends of this knot loosens the knot without untying it.

pic1 is the bend loose.  tighten by pulling on the standing ends.  release it by pulling on the working ends.
pic2 is the bend tightened.  ugly.
pic3 is the bend in twine.  it looks like it would be a pain to pull out, but a slight tug and it opens right up.

-Ian

[Dan_Lehman]

Ianxm, thanks for this!   

It's a fun end-2-end joint to play with, and could see some
value for its forcible loosening, perhaps.  The thing is, though,
that there are some good end-2-end joints such as Ashley's
#1408 which are non-jamming and, so, easily untied.

How'd you come up with this, btw?  (I discovered an end-2-end
joint of interlocked overhand knots that generally can be
forcibly loosened much like this.  But it's not something I find
myself using (and might need to consult my drawings in order
to tie it).)

--dl*
====

[ianxm]

How'd you come up with this, btw?

I was toying with variations on the reef knot.  I haven't found a very good solution for what I was trying to do.   I'll post what I was trying to do in the "knots around the house" thread and ask for suggestions.