SO FINE! #50 POLYESTER THREAD

Bob Purcell (Chief Threadologist of Superior Threads) discusses So Fine! #50™ Polyester Thread. Quality of Polyester threads are in the processing of the thread. The standard polyester thread in the market has roughly 6 micro-strands per ply (6 strands of thread wound together make 1 ply and then the ply's are twisted together for the end product). So Fine! #50™ has 48 micro-strands per ply. That is 48 micro strands x 3 ply's = 144 micro strands making up So Fine! #50™. The tighter twist allows for a smoother and stronger thread.