What is the best way to calculate core size, etc. for braiding

[Pascal Olivier]

Hello everyone. I was just wondering, what is the best way in considering core size, strings, etc. for doing a good job for braiding bosals and such.

[megabit]

I believe Grant says to measure the circumference and make sure the sum of you strings is at least that. Seems I have found you want the sum to be a bit more than the circumference to insure you cover well. To work back to the core size from a string size just reverse the process.

Grant's book (Encyclopedia of Rawhide and Leather Braiding) has most of the answers you need, finding and understanding them can sometimes be a challenge.

Mike

[KnotHead]

It would help if you were a little more specific with your wants in calculations. For instance,

Do you need a way to calculate the length of strands that it will take to braid around the whole core?

Will you also need core diameter?

There are reasons for being specific. Each calculation can either have room for overage, or the calculations can be precise. For instance,

If you have a given core size, you will need to know how many strands will fit around that core and how much length is needed to braid the length and radius of that given core size.

Brian...

[Pascal Olivier]

Thank you everyone. I believe I got it figured out now. And yes, what I did mean was the number of strands to properly cover a core. What Bruce Grant says is a starting point, but a better job will be done if you are just a little more generous with your strings.

[TrustCommunicationConsent]

I believe Grant says to measure the circumference and make sure the sum of you strings is at least that. Seems I have found you want the sum to be a bit more than the circumference to insure you cover well. To work back to the core size from a string size just reverse the process.

Grant's book (Encyclopedia of Rawhide and Leather Braiding) has most of the answers you need, finding and understanding them can sometimes be a challenge.

Mike

LOL a challange is a bit like saying the ocean is moist. I learned to tie a pinapple knot from that book and it was a heck of a learning curve. However I agree compleatly that most everything is in there. I tend to make the shot bag. Then use (diameter * 3.6)/ number of laces. Diam *3.14 = circumference so the 3.7 gives the extra needed to ensure good coverage.

[TrustCommunicationConsent]

It would help if you were a little more specific with your wants in calculations. For instance,

Do you need a way to calculate the length of strands that it will take to braid around the whole core?

Will you also need core diameter?

There are reasons for being specific. Each calculation can either have room for overage, or the calculations can be precise. For instance,

If you have a given core size, you will need to know how many strands will fit around that core and how much length is needed to braid the length and radius of that given core size.

Brian...

So far all I do for length is double the length I am braiding and add about 6". If you have a more precise way I would love to hear it.

[KnotHead]

Sorry it took so long to reply.

So, I've built an Excel sheet that might help out. It will figure how many strands, or strings it will take to cover a given surface area of a cylinder of a given radius and height. It will require you to convert inches to MM, you can google a metric conversion chart for that. Just as it says in the excel sheet at the bottom in Red, This excel sheet is EXPERIMENTAL and is in beta development only. All figures are to assumed inaccurate and the work should be double checked. I was always told to measure twice and cut once, this same old saying should be practiced with this excel sheet. I am no math geek by far, but this is my attempt to try and help out, so that the figures and math to it do not have to be done the long hand method.

Hope this helps. If it does not just delete the file. If it does and you find the excel sheet handy, by all means I would like to hear from one and all who use it. This is a free download, so you are free to redistribute it. All I ask is that the credits for the work stay at the bottom of the work sheet, even if the sheet is lousy and does not work for the individuals that will try it out.

Thanks

Brian...

surfacestrandscalculator.xls.zip

surfacestrandscalculator.xls.zip

[Bevan]

Hello everyone. I was just wondering, what is the best way in considering core size, strings, etc. for doing a good job for braiding bosals and such.

Gday mate

I know when i am making whips i measure the dia of the core " 10 mm x 4.5 = 45 div by the number of strings i want to use 12 = 3.75" that is the width of the string , it dosnt matter how many strands you use , when you plait it will add 3 mm + or - alittle bit so the finished job will be about the 13 mm mark.

let us know how ya go mate

Cheers

Bevan

ps that is using roo that has been split

Edited February 8, 2010 by Bevan