Hardcover note book

This is a hinged hard cover note book. The size of the paper that goes in it is 5" X 4.5".
I made it for a log book for my drone flights but it can be used for any small note book.
I used a stiff wire as the hinge pin a coat hanger might work. I used solid 2.5mm copper wire. To hold the pages in the book I drilled 4 very small holes through the spine of the book and the pages just behind the hinge then I used a needle and thread and sewed through the holes and pages not ideal for adding and removing pages but it works.