Thank you for the nice comments.
Doggy, do make the leaf springs i used galvanized steel sheet, which was 0,6 or 0,8mm thick.
Of course, if You still have any questions feel free to ask , I will try to answer to all of Your questions.
I belong to people who like to share their knowledge and experience and that's why You can find on my Youtube Channel series of films "how it's made."
Finster, it's very nice to hear that.
Greetings
Pawloosw