An engineer's guide to the optimal string length for (normal) friendship bracelets

=================== WORKABLE EXCEL SHEET ADDED ================== You can now download an excel sheet with the formula embedded from the link below. It is easy to use - just need to find N_knot and N_base from a pattern and the string length will be calculated straight away! https://www.dropbox.com/s/34ic64ydql7... ================================================================== l_string = l_bracelet/M_pattern*(8.1N_knot+1.4N_base)+50cm extra allowance l_bracelet - desired length of the bracelet N_knot - number of occurrence as knotting string in the pattern N_base - number of occurrence as base string in the pattern M_pattern - number of rows in the pattern Music: https://www.bensound.com