Pivot bushing assembly. The split collars will be welded on one side to prevent the pin from turning. That way the wear is only on the brass bushings. The pin is 5/8" rod with a section of heavy wall pipe slipped over one end. I TIG welded that together and then ground a nice bevel on it with a flap disc on my angle grinder. I will later put a grease zerk in the top of it for lubricating the bushings. That requires more precise equipment than I have at home, so the grease mods will have to wait. In addition to the Evelyn Wood sped reddin' course, I took another course of hers in tenaciously quick TIG'n. I figured since I will be grinding and beveling that cap to make it look all pretty, I might as well try to weld it as quickly as possible. I cranked the amps, set the pulser on the welder, laid fill wire across and burned it down. It actually turned out ok, which is modus operandi for me. Anytime I try really hard, I fall flat on my face.