I'm hoping somebody can tell me why looms sometimes have the cloth aprons and sometimes the string style? On this loom, the upper back beam has a cloth apron, the lower back beam has a string apron, and the front beam has a string apron.
And why does there always seem to be one friction brake and one regular brake? Why not have two friction brakes?
Are these due to cost issues or is there a preference of one over the other with different types of warp threads?