Good balance of theory and practical
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It's not too clear in the title but this book is specifically about treating steel, it does cover other materials briefly.
I had a basic understanding heat treatments before this book but did not understand why the steel changed when you heated and cooled it. The book starts with a nice history of working iron into steel and the different types of steel. It follows with lots of scientific detail as to what is happening in the metal when it is treated. For people with no background in science this might be a little hard going. However, the science is balanced with lots of practical details of how to do all of the different heat treatment of steel and when not to attempt this. The book is clearly written with good digrams and images.
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A gem of a book
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Tubal Cain covers all that he states that he will cover: and he does it with ease. One caveat: current legislation would suggest that unless you have electrical qualifications then it is best not to try and build some of the electrical equipment proposed in the book. Tubal intimates that perhaps we have gone too far in that respect, but from my youth I can recall that employers had little regard for health and safety issues.
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