|New project book|
|Old project book|
In later years I also have started adding charts for my own designs or for alterations made in other designs.
So why keep a book and not just a digital file with text and pictures ... ? Hard to answer that - I guess such a file would be equally useful, but it just does not appeal to me. OK - I have my charts in Excel-format, but for the rest I like keeping my book.
If you are considering starting a project book (which I recommend) - buy one of good quality, because it will have to stand a lot of use through the years.