Sooner or later the newcomer to model engineering will be faced with heat treating metal; to do basic heat treatment is straightforward, but if you need the results to be effective, for instance with tool bits, you really need to have more information.
And that is where this, to my mind extremely good, book comes in handy for how to heat treat just about any metal. Chapters include:- Metal Properties, Building a Small Heat Treatment Oven, Hardening and Quenching, Tempering, Annealing, Normalizing and Strees Relief, Case Hardening, Work Hardening and Decorative Finishes.
128 pages with numerous all colour photographs - useful as hardening is a process dependent on metal colour often as not. Hardbound.
A copy of this has gone on my workshop bookshelf for reference!