Your 1 soft shackle price costing $50 to $85 is inaccurate for 5/8", all of those are made out of 7/16" or 1/2". The least expensive 5/8" from the vendors listed in the first post will set you back about $180. I don't do shackles out of 5/8", but for 1/2" I typically use about 4'. A good chunk of that will be waste needed to have leverage for tying the knot. Some knots use more or less rope as well, though it's fairly neglible. I always used a version of the Carrick Bend, I'd have to go back through my notes to see which ABOK number it is. I've done them with star knots as well, and they look awesome but it's a lot of work just to make it look pretty. Being stingy, you could likely get 5 shackles out of a 20' piece of 5/8" assuming that you've had practice at it and don't waste more than you need. Step your size down to 1/2" (which is still likely far more than you need) and the price drops considerably. I can pick up 1/2" Amsteel locally for right around $3/foot, 7/16" for about $2.50/foot. It's quite a bit less expensive to make your own. I can find most of these for less if I get lucky and find a spool that doesn't have much on it at the store. Samson Industries is right up the road from me. They used to sell huge boxes (4'x4'x4') of cutoffs, remnants and cosmetic blems but I don't think that they do that anymore. I took a tour of the production facility and they let me dig through a few boxes and take what I could carry. Most of the pieces were in the 10' range but it was great practice material.I can't see that you would save money by making your own soft shackles based on numbers.
Let's say we pay a wholesale price of $6.27 per foot on the Ultrex by Yale at 5/8 size.
Estimating the cost only:
$6.27 x 20 feet
Total = $132.39 (plus tax if applicable)
$1.50 per foot
$1.50 x 20feet
= $30.00 plus tax
You would be at $162.39, Plus the time you spent making 1, 2, 3 shackles etc. Whatever you would pay yourself to complete 1.
1 soft shackle costs $50 to about $85.00 depending on the brand.
So I guess you would spend more money in the beginning, but you would have extra rope for the future. I can see your point
I like that he's changed it so that the knot can't collapse. I haven't done one in the Diamond Knot myself. I like how the tails get tucked back in, I think it's a neater, cleaner finish. I'm not sure about where he's getting his percentages from for 220% stronger. I've read and seen results that show that the knot reduces the strength by about 20%. I figure 50% loss just to be safe, but I'm conservative. My winch line is 3/8, my soft shackles are 1/2, so the shackles are still stronger than the winch line.I have been considering tying my own and came across this video. I am curious what the opinion is from the rope experts here, of his method. He make some claims at the beginning about his method. He is making small soft shackles for hammocks but couldn't his method be applied to larger rope?
I've mentioned before, they're pretty easy to do once you've made one I totally get buying them, but on the flip side you can save a ton of money if you're willing to spend a few minutes learning to tie the knot.Here is the video of tying the soft shackle tested above.
There are a few different varieties out there. I like the 12 strand stuff personally. It's easy to work with, easy to splice, easy to find. There are different braids/treatments/finishes out there, but I don't personally feel that the added cost is worth the ounces that you'll save in a length as short as your typical soft shackle.Are there different flavours of of this type of rope or as long as you have 1/2" for a shackle like this you are gtg?
I see there are some differences in strand count for instance with Dyneema, but that is maybe getting a bit specialist?