Obviously I couldn't wait to try the technique myself... so here's how to weave pibiones
(the word, in Sardinian dialect, means grape)
Warp and weft are the same, while the extra weft is thicker.
I think I like best the monochrome version, where the design resulting from the contrast
between plain weave and the little grapes is not so obvious.
The diameter of the stick goes according to the thickness of the weft - just like knitting.
Normally the stick is made of metal, but at that moment I only had a wooden needle available!
Step 1 :: according to your design, count the warp threads and wrap the extra weft on the stick.
This is a bit tricky, as the tension of the extra weft on the stick has to be even in order to get
pibiones of the same size, but it only takes a bit of practice.
Step 2 :: once you finish a row, secure it with a pick of plain weave
(here traditionally there would be 3 picks of plain weave between one row and the other).
Leave the needle in place.
Step 3 :: remove the needle and get ready for another row, following your design!