Here are some photos showing how to make a helical sennit with 4 "ribs". It is an enlargement of an already well known sennit which has 2 ribs.
The eye is a square knot bar (white) which has a 4 strand core (black).
When the eye is formed there are 12 strands for the sennit, 4 white and 8 black.
Make an 8 strand MW around the 4 whites and then a standard crown with the whites.
I use a core for these sennits, in this case a bamboo kebab skewer.
Do the same with the other blacks.
Tighten all strands, particularly the white crown. For maximum neatness I tighten all strands almost to the nth degree, particularly the crown strands.
Everything will be congested at the start but things will get easier as more strands are added and the sennit starts to flare outwards.
Form another crown.
Same as before with the blacks.
This shows how new strands are added.
Introduce them on the inside where the start will be hidden.
Tuck the ends as you see here.
Three other reds added on the bight, giving 8 new strands.
Another set of strands added (light blue) inside the reds.
All tightened up.
Here you can see the helix starting to form.
Don't give up if you get a bad start. Everything gets easier as you progress.
Practice with scrap cord first!!
