The Ethiopian bookbinding technique is a chain stitch sewing that looks similar to the multi section Coptic binding method.
A. Szirmai, the chain stitch binding dates from about the sixteenth century in Ethiopia and Eritrea.
These books typically had paired sewing stations, sewn using two needles for each pair of sewing stations (so if there are 2 holes, use 2 needles...or 6 holes, 6 needles etc.).
[1] The covers were wooden and attached by sewing through holes made into edge of the board.
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