## Intro: Cobra Weave Math

When I first started making bracelets this weekend, just about every cobra weave tutorial I found said "basic rule of thumb is 1'-0" of cord per 1" of bracelet". I made all of one bracelet using this method, a seven incher, and used all of five feet, even though I should have used seven. Two feet of waste is no good!

Break out the calculator:

5' divided by 7" (5/7=.71)

This is a good starting point. I so want a little bit of waste so I can at least finish my piece, so I went ahead and rounded up to .75. That's your factor.

So when you need to make, for example, an 8" bracelet, multiply:

8x.75

That gives you 6'-0" of cord.

Using this factor, I've made a handful of bracelets since, and only end up with two small pieces of waste, averaging 2" in length, for each bracelet.

## Share

### BillK6 made it!

## 4 Discussions

11 months ago

To simplify it further, just think of it as a 9:1 ratio and use whatever units you like.

3 years ago

I'm not from America so what do these measurements mean?

Reply 3 years ago

Measurements given are using the Imperial system. Use the appropriate formula to convert to metric as needed.

Reply 2 years ago

Very good idea. Thanks, I'm going to keep that in mind. Easy enough to remember that factor.

P.S. Don't feed the trolls!