area of the holes 92 in line 90 indeed holes 98 may close up entirely second even if the percentage open area of the two were the same more adhesive would flow through the holes in line 90 since more adhesive will flow through a large hole than through two small holes even if the total area of the two small holes combined is equal to the area of the large hole similarly it can be seen that more adhesive will be deposited through vertical line 90 than through horizontal lines 100 or 106 it is difficult to say whether more adhesive would be deposited through horizontal line 100 or horizontal line 106 but it is certain that in many cases the amounts deposited will differ these effects are undesirable since uneven sculpturing usually results when more adhesive is applied to one line than another this effect is especially noticeable when regular patterns such as checkerboards or evenly spaced stripes are sculptured it has been found that these effects are minimized if no axis of symmetry of the background pattern is parallel to lines in the design pattern if the background pattern has spaced apart apertures located on the vertices of an array of uniform equilateral triangles this requirement is met by positioning the background pattern such that there will be a 15 u00b0 angle between the axis of symmetry of the background pattern and circumferential lines on the screen fig1 illustrates a screen for printing lines in both the warp and weft directions using the present invention on the screen shown in fig1 the apertures define longitudinal or weft lines 116 and 118 and circumferential or warp lines 120 and 122 it can be.