The width of the warp and weft threads. If the thread width is 1, then the threads will fully touch with no gap between them. If the thread width is 0, the thread will disappear. (You can randomize thread width by setting the Width Spread parameter.) The valid/slider range is 0 to 1. The default value is 0.75.
Randomizes the width of each thread along its length by subtracting a random amount (between 0 and the Width Spread value) from the U Thread Width and V Thread Width values. For example, if the thread widths are 1 and the Width Spread value is 0.75, the actual thread widths with vary between 0.25 and 1. If the Width Spread value is greater than or equal to the Thread Width value, then some threads will disappear entirely at certain points along their length. The valid/slider range is 0 to 1. The default value is 0.