Sorry for the vague description. (I had to use Google to get the answer to the anti-bot question) I'm making a steadicam system and am wondering how to proceed with the arm. Problem is: I always scavenge rather than buy, so I don't know what anything is called. The arm kind of works like a race-car's suspension, but upside-down. the pivots are joined kinda like the pivot on a pair of scissors, but low friction/noise is very important. The arms are made of aluminium and I'd normally just drill through, cut a little thread on the end of a polished steel bar, push it through and put a nut on either end. (with lubed brass washers between the links of the arm where they would otherwise be in contact with each other. Surely there is a better way. For example, something like a skateboard bearing that can be secured into a hole in the aluminium somehow. Basically something that looks like a skateboard bearing with a flange on one end with some small holes in for attaching it to stuff. What would you call something like that? Does it have a name?