Scary health warnings Colin, just think, if you'd used the stuff, you might not be here now. I remember R.F.Austin's model shop at Southbourne, always lots of interesting things to see.
Today, with soft haired dope mop ready and lots of newly liquefied dope to hand.....DRAT!.....I'd forgotten that I hadn't made the tips for the wings. Glued up some 1/2" and 1/4" sheet. Left them clamped up for the morning. This afternoon I marked them and sawed them to approximate profile. Couldn't help grinning as the wood went smoothly through the bandsaw, years ago it would have been a hand powered fretsaw, probably a busted blade (or two) and a wobbly and very oversized tip profile. There it was, after a couple of hours, two tip blanks trimmed and glued to the wing. After tea (yeah! old fashioned, that's me) I taped up the wing sheet at the tips, this prevents bits being sanded off the sheet and makes a good template to get the surfaces of the tip block to match the profile of the wing section. You all knew that of course, but there might be a newbie out there, and all this might seem like a very confusing way to build a model. Hopefully, all will make sense....eventually. Perhaps tomorrow I'll get to slop a coat of thinned non-shrink dope over the areas where the covering is to be ironed on.