Little to report on Loose Ends other than problems. The warping that was apparent when track laying began on the embankment module has become worse, so I will have to cut out the trackbed and replace it. Looking at the station yard module, which has sat on the shelf since the cork trackbed was glued down, reveals the source of the problem:
Cork + PVA + foam board doesn't work. Though all appeared well after initial drying of the PVA, subsequent curing of the glue and/or contraction of the cork has had disastrous results. Both of the affected boards will need the cork section cutting out so I'm leaving this until I feel brave enough and have worked out how to ensure that the two modules will line up correctly with the bridge section. Without the cork they will be 3mm lower. Do I raise the bed on these two modules or lower the bridge by 3mm? It may just be easier to lower the bridge.
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