hawk, do a search on equiped.com, there used to be a link to how to make them on there, it might not be so easy to find as it was on there a couple of years ago at least.
i can still remember how to make them but its not easy to explain!! saying that i'll have a go.
take a rod, tie off the free end. make a series of loops round the rod(as many as you like). with the rod away from you having the free part towards you pass a bight through the loops. now pull new loops out of the bight through the original loops, and pass a bight through those, and so on till you've finished.
i'll email you a drawing if possible
sc
hawk, just uploaded a crude drawing of how to make it into the diy gallery. hope that helps
sc