Well, lets get started!
Here you can see a 52100 steel bar that is roughly 2″ wide and 3/32″ thick. We are going to make a 10″ long gyuto blade from it and the blade profile is already drawn on the bar.
Above it you can see the blade freed from the bar. There are many different ways to do this – metal saw, hand saw, angle grinder, laser, waterjet, etc – and this will not affect the final result. I have chose to drill holes around the blade perimeter and then saw or break the remaining steel web, wich is not very eficient but I end up using this method all the time since I don´t have a metal saw on my shop.