Now, where did I see it? There are ways of making diagonal stripes in the Materials Room, starting from the U and V inputs. Step 1: math_function Add the u_value and the v_value. Step 2: put the result into a math_function Mod as Value_1. The Value_2 dial should be set to 1, and the Value_1 dial controls the number of lines. 2n line pairs (black and white) when the dial is set to n Step 3: Feed the result of that into a math_function Round, as Value_1. Dial for Value_1 is 1, for Value_2 set to 0. To get diagonals running the other way, replace Step 1 by a Subtract operation, followed by adding 1 to the result. So now you have two sets of nodes, giving diagonal stripes. How do you combine them? Combination step 1 (black mesh on white background): multiply the two sets of stripes together. Combination step 2 (white mesh on black): subtract the black-on-white from 1. Finally, you can adjust the relative width of the stripes by replacing the Round node in Step 3 with a Step node, and varying Value_2 to get the balance you want. Oh, and if you want to have solid hems and seams, do just them as a bitmap, white seams on black, and mix in with another multiply.