Warren in Lancaster, PA
I watched the whole video. It was very weird to see a blacksmith replicate a drop forged chisel with hand methods. These chisels are designed around the drop forging process; hand methods are more versatile. Its like making Mcdonalds hambergers at home or making biscuits for biscuit joinery in a hand tool shop.

I guess old leaf springs are awfully cheap, but if you are going to make a chisel by hand, why not use a steel that was designed for edge tools? I have a blacksmith friend here in Pennsylvania whom I approached about making a chisel a decade ago. When I told him I didn't want leaf spring steel he said "you don't know anything about steel".