Hi,
It’s the wrong time of the year in Old South Wales to do wood work. My garage is too damp to even store timber never mind working on it! So, the cut timber is now stored in the workshop where I am working on the base boards for the curved track. Three boards have been assembled two of which are being hinged together to make a quarter circle. As well as the hinges the boards are bolted together using a single bolt. The positioning of this bolt in both of the base boards is critical to allow the track to line up (there are no fish plates used over the board joints) when the layout is dismantled and assembled again. To allow this the bolt holes in the wood are bushed with an aluminium tube a friend visiting kindly machined a load of these tubes for me. To drill the holes accurately in the wood a wooden jig has been made, this jig has to work for two different size holes one being for the aluminium tube the other the tapping size for a M6 thread. This was achieved by making a pair of steel stepped bushes back to back drilled with the relevant size holes. The next job is to use the jig so the base boards are connected then go on to complete this quarter circle to check everything before going on the other six boards for the curved track.
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Regards Tony.