Impossible bottles

[PeregrineBF]

So I saw some of Harry Eng's amazing bottled knots. His goal was to make people think. That tends to be one of our goals.

So I tied a knot in a bottle.


The neck of the bottle is 18mm in diameter, the rope is 15.88mm (5/8 in) solid braid polypropylene from home depot (way too soft for this sort of work). The bottle is a Knappogue Castle whiskey bottle, with the whiskey safely drunk and the label removed.

Sadly, my phone's camera has no manual focus and can't focus on the figure-8 stopper knot behind the glass. I'll try to get a better picture soon.

The apparent impossibility of the knot in the bottle causes people to think. Then I tell them I don't have any long-handled tweezers, pliers, or forceps, and that of course the bottle has not been damaged or cut.

[stelz]

Tie it loose, stuff it in, pull up so it hangs on the shoulders at the neck of the bottle, pull it tight?

[Cardinal Pizza Deliverance.]

That is pretty nifty. The idea looks like an entertaining self-made puzzle that even I might be able to put together.


_{ETA: Added the rest of the damn reply.}

[Elder Iptuous]

That's what i thought, seing Yatto's bottle, Anna.
but check out the bottles in the link.
pretty impressive.

[stelz]

That's what i thought, seing Yatto's bottle, Anna.
but check out the bottles in the link.
pretty impressive.

Holy FUCK.

[LMNO, PhD (life continues)]

This is kind of blowing my mind.

Also I love his logo:

[stelz]

You could probably roll an empty card box and get it in, then do the same with the cards, putting them in the box one by one with some kind of long tweezers. It would take forever, though.

I have no idea about the other stuff.

[Elder Iptuous]

there is one on that page that gives a description of the assembly process.

[PeregrineBF]

Tie it loose, stuff it in, pull up so it hangs on the shoulders at the neck of the bottle, pull it tight?

Not even close.
Note that the rope pretty much entirely fills the neck of the bottle. 15.9mm rope in an 18mm neck. The knot is 4 rope thicknesses at the thickest point. So it would need a 60mm wide neck to do that.

Steps:
Get bottle of whiskey.
Drink whiskey.
Scrape label off with razor blade.
Remove residue with acetone.
Cut rope to appropriate length.
Heat-seal ends to prevent unraveling.
Put one end inside bottle.
Tie figure-8 knot inside bottle.
Tie turk's head knot around neck with the other end.
Take photograph.

[Elder Iptuous]

so, did you do the knot tying with long tweezers?

[M. Nigel Salt]

These are cool as fuck.

[Telarus]

Yeah, very impressive.


I think I know the 'trick'. I'll PM you.

[M. Nigel Salt]

Yeah, very impressive.


I think I know the 'trick'. I'll PM you.

Oooh!

[Cardinal Pizza Deliverance.]

Yeah, very impressive.


I think I know the 'trick'. I'll PM you.

I'd like to know your thoughts as well.

[Telarus]

Ok, I'll spill as it was revealed not to be the trick.

My idea was to have a leather cord or line tied to the end of the rope inserted, so you can "start" the knot in the smaller rope with tweezers and then "push" it back onto the longer rope.