Dragonback weave
The dragonback is a decorative weave with a raised ridge running down the spine.
It works well for bracelets and collars.
The base is a strip of European four-in-one (E4-1).
Adding the side rings pulls the weave tighter, so the finished piece
comes out shorter than the strip you started with.
I usually leave a few units of plain E4-1 at each end,
which makes it easier to extend or connect the piece later.
A higher aspect ratio than plain E4-1 is needed,
because more rings have to share the same opening.
The example below uses a ratio of 5.3, which is close to the minimum.
Some tutorials can be found at:
Mailleartisans - Images