crackle

a supplementary-weft structure with a plain- weave ground cloth. Crackle is usually woven on four shafts and forms four blocks of pattern. The supplementary weft float passes over three threads and under one in the pattern block, under three and over one in one of the background blocks, and over three in one pick and over one in the alternate pick in the other two background (halftone) blocks. Adjacent blocks cannot produce pattern or background at the same time: crackle is not a unit weave.