thanks for the warning Ross.........then you certainly wouldn't have liked my first idea which was to somehow fit the stopper into a chuck on my woodworking lathe, apply a little paste and gently offer up the body whilst the stopper was turning - all this to hasten the end result!! I decided against this method just in case the two parts jammed whilst the stopper was still turning

However, I'd swear I have read in one of my books recently that chucking the stopper was a method used by some of the old guys. I'll now try it manually, and when done will post pics of the decanter, whose origin I know nothing of.