I was going to call this Instructable emergency tubing connections with string. But I now use this method often, even when not an emergency situation. It works when you need to connect any small flexible hose to copper tubing or metal pipe, and do not have hose clamps or barbed fittings.

Step 1: Materials

Assuming that you already have a rubber or vinyl hose, and a metal tube you need to connect it to, you will need:
  • String.  Best is fine nylon cord, but it just needs to be strong. Several feet (a meter or so) long.
  • Tools: A knife or scissors.

Step by step on the constrictor. &nbsp;One of my favorite knot sites. &nbsp;Thought it might help.<br> <br> <a href="http://www.animatedknots.com/constrictorend/index.php?LogoImage=LogoGrog.jpg&Website=www.animatedknots.com&Categ=boating" rel="nofollow">http://www.animatedknots.com/constrictorend/index.php?LogoImage=LogoGrog.jpg&amp;Website=www.animatedknots.com&amp;Categ=boating</a><br>
i imagine that a <strong>constrictor knot</strong> would do well here (step 3).
I agree, and should have thought of it earlier. <br>Others have mentioned this same knot. I added an image of the knot, see below. <br>Thanks for commenting. <br>Bill
The only thing I would recommend to improve this is to wax the nylon. It can be slippery and a bit of wax can help out a lot to keep it from slipping. Spearfishers use the constrictor knot all the time when tying up bands and they use a waxed thread to prevent slipping in a wet environment.
I second the constrictor knot.
The constrictor knot would be great here. <br>There are plenty of images of this knot, here is one of the most clear.
Thanks, good suggestion.
Interesting idea! I use iron wire, two turns, no more,, no less. But it has an ugly look.

About This Instructable


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Bio: I'm a retired mechanical engineer, woodworker, boater, and inventor.
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