Thanks Phil and iron quake for the response, I have watched a lot of videos online and I understand all about the types of steel. Let’s say I have a coil spring or 6’ length of 4140 1” square bar and I forge it to the shape I want, what is the order of the process until I can use it as a tool? BTW I’m from Israel and obviously we have Hofi here and a few other but it seems not a lot of blacksmiths in Israel are willing to open up and share (tried a few). Most of the stuff I do in life I learned myself and I like it so I'll be happy to know the process.