This video is amazing! It shows many “secrets”, though I could not follow it all because I cannot speak Japanese. The beginning is very istructive: the method for cutting stripes is described in Labarraque, 1823. Never seen that applied before!
From the mid on I could not really understand what he is doing and why, but I think this may interest many of you.
Please note how big the effort to produce "only" 8 long string....