We spent longer in the south than intended, because the appalling weather was going to make window work difficult, and we didn't fancy just sitting inside Erin Mae in the marina while the storms roared outside. Today, however, work resumed.
The new Dremel immediately proved its worth. My first task is to fill a hole where some engineer or other had drilled and tapped too close to the edge of the steel. I have some epoxy putty for that but, as my friend Brian would say, preparation is everything. I attached a small wire wheel to the Dremel - one of about 60 items in a £10 variety pack from Amazon, and it powered through rusty bits and old silicone. I've applied some Fertan and should be able to do the puttying tomorrow.
I can't see any sign of how the wood inner window frame was held in place (apart from the method thoroughly dissed in a previous post!). So today I have also drilled and countersunk four 3.5 mm holes through the hull, and used stainless steel screws to hold the frame tight. I was very glad to have brought my old mains drill – it made a much quicker job of penetrating the hull and cutting the countersinks than my 18v cordless.
At last I feel I'm making some progress. I suspect tomorrow's weather will put a halt to it for 24 hours.