Amazon recommended this book to me, as it somehow knew I was going to be the proud owner of a mini mill and lathe. Although I have already had a ton of formal training on a mill and lathe, I think this will make for a great piece of reference, and will also help me learn some new tricks.
I can say with almost 100% certainty that Dykem was used on the ZF-1. It's a dye that is used in machine work. It's blue. I picked up a little bottle of it from Amazon so I can use it when I start in on the ZF1.