I haven't watched all the videos yet (one must have some patience with Mr. Rowe), but seeing what's involved I can appreciate the sense of pride one would get from a well-made spring. I can also appreciate the subtle humour in Jack Rowe's comment, which in effect came across as "You'd be crazy to make a spring when you can buy one."

Could it also be said that, where it is possible to buy a generic V-spring and cut/file it accordingly, this would be better than starting from scratch?