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Thanks for the info.fossil finder wrote:There are no castors. The turntable is fastened to another piece of timber fitted inside the top of pipe by what is called a 'seat swivel' or 'big hole swivel. Whitworths Marine sell them for $16.95. Some have a lock. Because they are flat there is a little trick to mounting them? I first screwed the swivel to the disk of timber to be later fitted inside the pipe. Because the swivel is flat and only 25mm thick a hole big enough to take the screws you are using needs to be drilled through the bottom disc. This way access is provided so a cordless drilll can be used to fasten together both pieces by rotating swivel until each hole in swivel can be located.
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