The Cowboy CB4500,3500 and 3200 narrow needle plate and feed dog set. Why was it developed? A few years back I decided that I wanted a cylinder machine that could handle a wide range of threads (particularly thick) with a large bobbin that could hold a lot. Smaller machines I have could do thread up to 138 (20m) but with that size thread in the bobbin I may only get 1 or 2 belts done before the bobbin needed loading again. Also the thickness of the job would often be more than desira