Rhiw needs at least one private industrial shunter. An 03 will do, but the draw of different things is too much, so work has started on a conversion from a Knightwing kit; the one much beloved of the 009 mob (which is why I had it). So combined with a Tenshodo spud that I had in stock from an abandoned project which slips my mind, makes it a cost-free new game.
Taking a little inspiration from Neil Rushby's article in RM (Dec 08) the 'chassis frame' is narrowed to 30mm and shortened to an o/a length of about 56 mill. This isn't going to be an exact copy of Neil's piece for quite a few reasons.
The problem with mounting a spud is that it's not flat-topped, in fact there are three steps between the lower section and the screw. The first is 2mm, so two thicknesses of 40 thou. The rest is obvious from the photos.