Final answer:
Diagonal stitches are taken when turning a sharp point in sewing to ensure a crisp and neat finish. These stitches allow the fabric to accommodate the bulk when turned right side out, preventing bunching and distortion, resulting in a sharp and professional look.
Step-by-step explanation:
When sewing, particularly in garment construction, you might take diagonal stitches when turning a sharp point to ensure that the point turns out neatly and has a crisp, clean finish. Diagonal stitches provide the fabric with extra space to accommodate the bulk of the fabric when it is turned right side out. Without this allowance, the fabric at the point could bunch up, not lie flat, or not form a sharp point because the seam allowance would be too tight, causing distortion.
Diagonal stitches are typically taken at the very tip of the seam allowance before turning the fabric. Once turned, these diagonal stitches allow the excess fabric to spread out, reducing bulk and giving the sharp point a more defined shape. This technique is particularly important in professional sewing and tailored garments, where the sharpness and accuracy of corners and points can significantly affect the overall appearance of the finished item.