Prop Shaft Replacement - If you ever have to do this !!!
Fitting prop shafts during construction is straightforward in that you can mount the hull upside down on the workbench. Faced with a completely seized prop shaft needle roller bearing on a fully detailed model limits options on how you can apply major surgery to the underside of a hull. All other methods for removing the shaft had been exhausted.
Upside down was not an option. Careening onto its side is possible providing you can make a jig to adequately support the hull to protect all the detail bits. Two sections of shaped balsa with a support lining of soft rubber sheet against the hull sides, carefully clamped to the workbench.
Using a Dremel / Rotacraft flexi shaft, carefully point grinding away at the original shaft sealing epoxy is a bit like preparing a dinosaur bone. I also needed to preserve as much of the original skeg as possible. Inside, the front support bulkhead had to be similarly cut away above the brass shaft tube whilst retaining the underside “U” to locate the new shaft.
HMS AmazonSuccess, with zero damage topsides. I had been scratching my head for ages over how to get the shaft out. I hope this method helps someone else.