Hello, Rubén! I think you are on your way of accomplishing another milepost - significant steps towards a method of making complicated simulated wood stringer frameworks in paper.
Please, at some time further down the line, consider setting down your results and methods in detail. Numbers of layers, method of overlaying at corners, horizontal layers overlapping vertical at the corners, etc., etc.
I regard this as a significant step towards solving an as yet unsolved paper modeling problem.
Leif
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