Removal of a broken screw, bolt, or other threaded fastener broken off in a hole is covered in this brief “Makes YOU an expert video!!” The demonstration uses left hand drill set and screw extractor set from Harbor Freight.
Drop forging is a forging process where a hammer is raised and then “dropped” onto the workpiece to deform it according to the shape of the die. There are two types of drop forging: open-die drop forging and closed-die drop forging.