Great article, I particularly like the information on the benefits of hot rolling steel for grain orientation and toughness. As a hobbyist knifemaker who likes to forge knives, I built a rolling mill about 15 years ago. It was the best thing I ever did. The mill saves me a lot of time and is a real-life saver when it comes to reducing steel to knife blank thickness or putting the distal taper in. If you get too much curve in the belly of a knife, one light pass through the mill will straighten out the curve in three seconds.