hi Jonathan i can save some uv space with unwrap cylinder object and choose follow active quad to make it straight line rather than circle that waste some space. but i got some uv stretching when doing it. so my question is : will it cause some problem with normal map and texturing further ? Thank you.
Hey Michael, great question. I would definitely avoid that kind of stretching where possible, even though it'll make the UV's take up more space. If it's only a slight amount than it may not be noticeable, but it's a bad habit to get into since you could really get stuck when texturing more complex objects.