Hiya Doug, yes done a few over the years. Methods probably same as yours- smaller ones by hand, middle sized and nested keys with end mills, and the...
In my back garden Paul ! Took the photo about 5 years ago when we had our annual day of sunshine here in Wales! i still have all the keys, the steel...
Are these the binocular shaped KIK as I'm more familiar with the re-keyable Euro stuff cut for half euro cylinders, all of which is metric. I recall...