If you search on your favorite search engine for "segmented fork," you'll find that there are lots of threads about building them. People have been building segmented forks for decades now, including on crappy department store bikes. You have to be careful and trying to save weight is a really bad idea. Experimenting with new designs might not be a good idea on a first fork. I have to say I'm more comfortable with other construction methods, but segmented forks are a proven design.