Butch Sheely gave me some printed articles on trip-hammer brake designs. I have been seeking permission from the authors of the articles to reprint them on the Forum. One of the authors is Dr. Stephen Bloom. Dr. Bloom generously offered a link to his article on hammer brakes, as well as a links to some great articles on knifemaking and general blacksmithing.
Trip-Hammer Brake: PDF File
Knifemaking Tutorials: Click on the subjects to open PDF files.
Dr. Stephen Bloom Knifemaking Tutorials
You will find a link at the bottom of the knifemaking tutorials page that will open a web site of blacksmithing articles. These articles were gathered by the Florida Artist Blacksmith Association. Or just use this link: Blacksmithing Articles
There is an incredible amount of general blacksmithing information available here.