I'm making a wind spinner from a copper pole about 5-6 ft. tall and cannot find a swivel connector that will attach securely and turn easily. Is there a swivel made of copper or brass that might work? Or, is there a connector with bearings that would spin freely?
You sound pretty competent. You must have a ball bearing swivel if your spinner is to move in light winds, and probably the easiest to get is a bicycle hub or pram or wheelchair hub from a discarded vehicle. You will have to attach the spinner arm to the hub, maybe making up a plate which bolts to the old spoke holes and then bolts to the spinner arm. The axle will be threaded so make up a matching threaded socket to fit into (or over) the top of your pole and pin it to stop the thread unwinding if the wind blows the wrong way.
You could do it the other way - bolt the spoke holes to the pole with three small right angle brackets and put the axle through the spinner arm and pin it which might be easier. Can't tell without seeing the job.
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